102887487561 has 8 divisors (see below), whose sum is σ = 137597769184. Its totient is φ = 68384432160.

The previous prime is 102887487509. The next prime is 102887487587. The reversal of 102887487561 is 165784788201.

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

It is not a de Polignac number, because 102887487561 - 2¹³ = 102887479369 is a prime.

It is a super-2 number, since 2×102887487561² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102887480561) 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, 51805396 + ... + 51807381.

It is an arithmetic number, because the mean of its divisors is an integer number (17199721148).

Almost surely, 2^102887487561 is an apocalyptic number.

It is an amenable number.

102887487561 is a deficient number, since it is larger than the sum of its proper divisors (34710281623).

102887487561 is a wasteful number, since it uses less digits than its factorization.

102887487561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103613111.

The product of its (nonzero) digits is 6021120, while the sum is 57.

The spelling of 102887487561 in words is "one hundred two billion, eight hundred eighty-seven million, four hundred eighty-seven thousand, five hundred sixty-one".