102279661983519 has 32 divisors (see below), whose sum is σ = 140864445584640. Its totient is φ = 65978563022592.

The previous prime is 102279661983493. The next prime is 102279661983523. The reversal of 102279661983519 is 915389166972201.

It is not a de Polignac number, because 102279661983519 - 2⁹ = 102279661983007 is a prime.

It is a super-3 number, since 3×102279661983519³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102279661973519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11767027 + ... + 18520859.

It is an arithmetic number, because the mean of its divisors is an integer number (4402013924520).

Almost surely, 2^{102279661983519} is an apocalyptic number.

102279661983519 is a deficient number, since it is larger than the sum of its proper divisors (38584783601121).

102279661983519 is a wasteful number, since it uses less digits than its factorization.

102279661983519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6755239.

The product of its (nonzero) digits is 88179840, while the sum is 69.

The spelling of 102279661983519 in words is "one hundred two trillion, two hundred seventy-nine billion, six hundred sixty-one million, nine hundred eighty-three thousand, five hundred nineteen".