102620105279 has 8 divisors (see below), whose sum is σ = 103500278400. Its totient is φ = 101743577496.

The previous prime is 102620105233. The next prime is 102620105297. The reversal of 102620105279 is 972501026201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102620105279 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 (102620105179) 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, 854777 + ... + 967410.

It is an arithmetic number, because the mean of its divisors is an integer number (12937534800).

Almost surely, 2^102620105279 is an apocalyptic number.

102620105279 is a deficient number, since it is larger than the sum of its proper divisors (880173121).

102620105279 is a wasteful number, since it uses less digits than its factorization.

102620105279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822669.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 102620105279 in words is "one hundred two billion, six hundred twenty million, one hundred five thousand, two hundred seventy-nine".