104901916521 has 16 divisors (see below), whose sum is σ = 148283330048. Its totient is φ = 65849500800.

The previous prime is 104901916517. The next prime is 104901916547. The reversal of 104901916521 is 125619109401.

It is not a de Polignac number, because 104901916521 - 2² = 104901916517 is a prime.

It is a super-2 number, since 2×104901916521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104901916521.

It is not an unprimeable number, because it can be changed into a prime (104901916591) 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, 15239500 + ... + 15246381.

It is an arithmetic number, because the mean of its divisors is an integer number (9267708128).

Almost surely, 2^104901916521 is an apocalyptic number.

It is an amenable number.

104901916521 is a deficient number, since it is larger than the sum of its proper divisors (43381413527).

104901916521 is a wasteful number, since it uses less digits than its factorization.

104901916521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30485952.

The product of its (nonzero) digits is 19440, while the sum is 39.

The spelling of 104901916521 in words is "one hundred four billion, nine hundred one million, nine hundred sixteen thousand, five hundred twenty-one".