51263455504 has 40 divisors (see below), whose sum is σ = 100668443960. Its totient is φ = 25286197248.

The previous prime is 51263455471. The next prime is 51263455517. The reversal of 51263455504 is 40555436215.

It can be written as a sum of positive squares in 4 ways, for example, as 3800475904 + 47462979600 = 61648^2 + 217860^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433012 + ... + 538540.

It is an arithmetic number, because the mean of its divisors is an integer number (2516711099).

Almost surely, 2^51263455504 is an apocalyptic number.

It is an amenable number.

51263455504 is a deficient number, since it is larger than the sum of its proper divisors (49404988456).

51263455504 is a wasteful number, since it uses less digits than its factorization.

51263455504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105947 (or 105941 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 51263455504 in words is "fifty-one billion, two hundred sixty-three million, four hundred fifty-five thousand, five hundred four".