104999694921 has 24 divisors (see below), whose sum is σ = 172647723456. Its totient is φ = 60869387040.

The previous prime is 104999694893. The next prime is 104999694997. The reversal of 104999694921 is 129496999401.

104999694921 is a `hidden beast` number, since 10 + 49 + 9 + 96 + 9 + 492 + 1 = 666.

It is not a de Polignac number, because 104999694921 - 2¹¹ = 104999692873 is a prime.

It is a super-2 number, since 2×104999694921² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (104999694521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23054310 + ... + 23058863.

It is an arithmetic number, because the mean of its divisors is an integer number (7193655144).

Almost surely, 2^104999694921 is an apocalyptic number.

104999694921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

104999694921 is a deficient number, since it is larger than the sum of its proper divisors (67648028535).

104999694921 is a wasteful number, since it uses less digits than its factorization.

104999694921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46113213 (or 46113210 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 63.

The spelling of 104999694921 in words is "one hundred four billion, nine hundred ninety-nine million, six hundred ninety-four thousand, nine hundred twenty-one".