102687199787279 has 16 divisors (see below), whose sum is σ = 103068497394240. Its totient is φ = 102306280988160.

The previous prime is 102687199787257. The next prime is 102687199787287. The reversal of 102687199787279 is 972787991786201.

It is a cyclic number.

It is not a de Polignac number, because 102687199787279 - 2⁸ = 102687199787023 is a prime.

It is a super-2 number, since 2×102687199787279² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102687199787197 and 102687199787206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102687199787209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5006923277 + ... + 5006943785.

It is an arithmetic number, because the mean of its divisors is an integer number (6441781087140).

Almost surely, 2^{102687199787279} is an apocalyptic number.

102687199787279 is a deficient number, since it is larger than the sum of its proper divisors (381297606961).

102687199787279 is a wasteful number, since it uses less digits than its factorization.

102687199787279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28850.

The product of its (nonzero) digits is 2688505344, while the sum is 83.

The spelling of 102687199787279 in words is "one hundred two trillion, six hundred eighty-seven billion, one hundred ninety-nine million, seven hundred eighty-seven thousand, two hundred seventy-nine".