102887904647997 has 20 divisors (see below), whose sum is σ = 175653424514656. Its totient is φ = 58793088369960.

The previous prime is 102887904647987. The next prime is 102887904648017. The reversal of 102887904647997 is 799746409788201.

102887904647997 is a `hidden beast` number, since 1 + 0 + 2 + 8 + 87 + 9 + 0 + 464 + 79 + 9 + 7 = 666.

It is not a de Polignac number, because 102887904647997 - 2⁸ = 102887904647741 is a prime.

It is a super-3 number, since 3×102887904647997³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102887904647987) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 90730074079 + ... + 90730075212.

Almost surely, 2^{102887904647997} is an apocalyptic number.

It is an amenable number.

102887904647997 is a deficient number, since it is larger than the sum of its proper divisors (72765519866659).

102887904647997 is an equidigital number, since it uses as much as digits as its factorization.

102887904647997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181460149310 (or 181460149301 counting only the distinct ones).

The product of its (nonzero) digits is 3072577536, while the sum is 81.

The spelling of 102887904647997 in words is "one hundred two trillion, eight hundred eighty-seven billion, nine hundred four million, six hundred forty-seven thousand, nine hundred ninety-seven".