104151231621 has 8 divisors (see below), whose sum is σ = 154298120960. Its totient is φ = 69434154396.

The previous prime is 104151231607. The next prime is 104151231641. The reversal of 104151231621 is 126132151401.

104151231621 is a `hidden beast` number, since 1 + 0 + 4 + 1 + 5 + 1 + 2 + 31 + 621 = 666.

It is not a de Polignac number, because 104151231621 - 2⁹ = 104151231109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3857453023 = 104151231621 / (1 + 0 + 4 + 1 + 5 + 1 + 2 + 3 + 1 + 6 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104151231601) 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, 1928726485 + ... + 1928726538.

It is an arithmetic number, because the mean of its divisors is an integer number (19287265120).

Almost surely, 2^104151231621 is an apocalyptic number.

It is an amenable number.

104151231621 is a deficient number, since it is larger than the sum of its proper divisors (50146889339).

104151231621 is an equidigital number, since it uses as much as digits as its factorization.

104151231621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857453032 (or 3857453026 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 104151231621 in words is "one hundred four billion, one hundred fifty-one million, two hundred thirty-one thousand, six hundred twenty-one".