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15212071199 = 138363139921
BaseRepresentation
bin11100010101011010…
…11100100100011111
31110021011012021200102
432022231130210133
5222123242234244
610553251251315
71045653320543
oct161255344437
943234167612
1015212071199
1164a68aa276
122b465a9b3b
13158576b880
14a44469a23
155e075554e
hex38ab5c91f

15212071199 has 8 divisors (see below), whose sum is σ = 16384306512. Its totient is φ = 14040132480.

The previous prime is 15212071181. The next prime is 15212071229. The reversal of 15212071199 is 99117021251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15212071199 - 220 = 15211022623 is a prime.

It is a super-2 number, since 2×152120711992 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15212071129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38759 + ... + 178679.

It is an arithmetic number, because the mean of its divisors is an integer number (2048038314).

Almost surely, 215212071199 is an apocalyptic number.

15212071199 is a deficient number, since it is larger than the sum of its proper divisors (1172235313).

15212071199 is a wasteful number, since it uses less digits than its factorization.

15212071199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148297.

The product of its (nonzero) digits is 11340, while the sum is 38.

The spelling of 15212071199 in words is "fifteen billion, two hundred twelve million, seventy-one thousand, one hundred ninety-nine".

Divisors: 1 13 8363 108719 139921 1818973 1170159323 15212071199