51420894696 has 48 divisors (see below), whose sum is σ = 139355480160. Its totient is φ = 17129152800.

The previous prime is 51420894631. The next prime is 51420894713. The reversal of 51420894696 is 69649802415.

51420894696 is a `hidden beast` number, since 51 + 420 + 89 + 4 + 6 + 96 = 666.

It is a super-2 number, since 2×51420894696² (a number of 22 digits) contains 22 as substring.

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, 120330 + ... + 342521.

It is an arithmetic number, because the mean of its divisors is an integer number (2903239170).

Almost surely, 2^51420894696 is an apocalyptic number.

It is an amenable number.

51420894696 is an abundant number, since it is smaller than the sum of its proper divisors (87934585464).

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

51420894696 is a wasteful number, since it uses less digits than its factorization.

51420894696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464406 (or 464399 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 51420894696 in words is "fifty-one billion, four hundred twenty million, eight hundred ninety-four thousand, six hundred ninety-six".