51446444904 has 24 divisors (see below), whose sum is σ = 139334121810. Its totient is φ = 17148814944.

The previous prime is 51446444891. The next prime is 51446444941. The reversal of 51446444904 is 40944464415.

It is a happy number.

51446444904 is a `hidden beast` number, since 5 + 144 + 64 + 449 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46461802500 + 4984642404 = 215550^2 + 70602^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51446444904.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 357266907 + ... + 357267050.

Almost surely, 2^51446444904 is an apocalyptic number.

It is an amenable number.

51446444904 is an abundant number, since it is smaller than the sum of its proper divisors (87887676906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51446444904 is a wasteful number, since it uses less digits than its factorization.

51446444904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714533969 (or 714533962 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 51446444904 in words is "fifty-one billion, four hundred forty-six million, four hundred forty-four thousand, nine hundred four".