51491056076 has 18 divisors (see below), whose sum is σ = 91642829460. Its totient is φ = 25307449720.

The previous prime is 51491056007. The next prime is 51491056147. The reversal of 51491056076 is 67065019415.

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, 3478571 + ... + 3493341.

Almost surely, 2^51491056076 is an apocalyptic number.

It is an amenable number.

51491056076 is a deficient number, since it is larger than the sum of its proper divisors (40151773384).

51491056076 is an frugal number, since it uses more digits than its factorization.

51491056076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29605 (or 14832 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 51491056076 in words is "fifty-one billion, four hundred ninety-one million, fifty-six thousand, seventy-six".