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152188651808 = 25689632
BaseRepresentation
bin1000110110111100100…
…1101000100100100000
3112112211021210112201122
42031233021220210200
54443140243324213
6153525310551412
713665243124214
oct2155711504440
9475737715648
10152188651808
11595a75876a6
12255b3808568
1311474b396bb
14751a316944
153e5ad08d08
hex236f268920

152188651808 has 18 divisors (see below), whose sum is σ = 299625752979. Its totient is φ = 76093222496.

The previous prime is 152188651801. The next prime is 152188651831. The reversal of 152188651808 is 808156881251.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 76094325904 + 76094325904 = 275852^2 + 275852^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=275852.

It is a super-2 number, since 2×1521886518082 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 152188651808.

It is not an unprimeable number, because it can be changed into a prime (152188651801) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2172335 + ... + 2241297.

Almost surely, 2152188651808 is an apocalyptic number.

It is an amenable number.

152188651808 is a deficient number, since it is larger than the sum of its proper divisors (147437101171).

152188651808 is an frugal number, since it uses more digits than its factorization.

152188651808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137936 (or 68965 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 53.

The spelling of 152188651808 in words is "one hundred fifty-two billion, one hundred eighty-eight million, six hundred fifty-one thousand, eight hundred eight".

Divisors: 1 2 4 8 16 32 68963 137926 275852 551704 1103408 2206816 4755895369 9511790738 19023581476 38047162952 76094325904 152188651808