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87148993807 = 377133174341
BaseRepresentation
bin101000100101001111…
…1000001110100001111
322022221120012120212101
41101022133001310033
52411440120300212
6104011413215531
76203430140101
oct1211237016417
9268846176771
1087148993807
1133a61375a27
1214a820315a7
1382ab276975
14430a3db571
152400e19157
hex144a7c1d0f

87148993807 has 8 divisors (see below), whose sum is σ = 90764999712. Its totient is φ = 83599336800.

The previous prime is 87148993741. The next prime is 87148993819. The reversal of 87148993807 is 70839984178.

It is a happy number.

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 87148993807 - 223 = 87140605199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87148993007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16584544 + ... + 16589797.

It is an arithmetic number, because the mean of its divisors is an integer number (11345624964).

Almost surely, 287148993807 is an apocalyptic number.

87148993807 is a deficient number, since it is larger than the sum of its proper divisors (3616005905).

87148993807 is a wasteful number, since it uses less digits than its factorization.

87148993807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33174449.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 87148993807 in words is "eighty-seven billion, one hundred forty-eight million, nine hundred ninety-three thousand, eight hundred seven".

Divisors: 1 37 71 2627 33174341 1227450617 2355378211 87148993807