51348704256 has 132 divisors (see below), whose sum is σ = 149583411432. Its totient is φ = 16964419584.

The previous prime is 51348704243. The next prime is 51348704269. The reversal of 51348704256 is 65240784315.

51348704256 is a `hidden beast` number, since 51 + 348 + 7 + 0 + 4 + 256 = 666.

It is an interprime number because it is at equal distance from previous prime (51348704243) and next prime (51348704269).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1016755 + ... + 1066061.

Almost surely, 2^51348704256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51348704256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74791705716).

51348704256 is an abundant number, since it is smaller than the sum of its proper divisors (98234707176).

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

51348704256 is a wasteful number, since it uses less digits than its factorization.

51348704256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49446 (or 49425 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 51348704256 in words is "fifty-one billion, three hundred forty-eight million, seven hundred four thousand, two hundred fifty-six".