104105215515531 has 16 divisors (see below), whose sum is σ = 142037440110720. Its totient is φ = 67788288906240.

The previous prime is 104105215515517. The next prime is 104105215515547. The reversal of 104105215515531 is 135515512501401.

It is a de Polignac number, because none of the positive numbers 2^k-104105215515531 is a prime.

It is a super-2 number, since 2×104105215515531² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 104105215515531.

It is not an unprimeable number, because it can be changed into a prime (104105215515551) 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, 774076 + ... + 14450246.

It is an arithmetic number, because the mean of its divisors is an integer number (8877340006920).

Almost surely, 2^{104105215515531} is an apocalyptic number.

104105215515531 is a deficient number, since it is larger than the sum of its proper divisors (37932224595189).

104105215515531 is a wasteful number, since it uses less digits than its factorization.

104105215515531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13735226.

The product of its (nonzero) digits is 75000, while the sum is 39.

The spelling of 104105215515531 in words is "one hundred four trillion, one hundred five billion, two hundred fifteen million, five hundred fifteen thousand, five hundred thirty-one".