51294338804 has 6 divisors (see below), whose sum is σ = 89765092914. Its totient is φ = 25647169400.

The previous prime is 51294338803. The next prime is 51294338873. The reversal of 51294338804 is 40883349215.

It can be written as a sum of positive squares in only one way, i.e., 40747459600 + 10546879204 = 201860^2 + 102698^2 .

It is a super-2 number, since 2×51294338804² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51294338803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6411792347 + ... + 6411792354.

It is an arithmetic number, because the mean of its divisors is an integer number (14960848819).

Almost surely, 2^51294338804 is an apocalyptic number.

It is an amenable number.

51294338804 is a deficient number, since it is larger than the sum of its proper divisors (38470754110).

51294338804 is a wasteful number, since it uses less digits than its factorization.

51294338804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12823584705 (or 12823584703 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 51294338804 in words is "fifty-one billion, two hundred ninety-four million, three hundred thirty-eight thousand, eight hundred four".