51011172706 has 64 divisors (see below), whose sum is σ = 89925897600. Its totient is φ = 21486560256.

The previous prime is 51011172703. The next prime is 51011172733. The reversal of 51011172706 is 60727111015.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51011172703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2632180 + ... + 2651488.

It is an arithmetic number, because the mean of its divisors is an integer number (1405092150).

Almost surely, 2^51011172706 is an apocalyptic number.

51011172706 is a deficient number, since it is larger than the sum of its proper divisors (38914724894).

51011172706 is a wasteful number, since it uses less digits than its factorization.

51011172706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19523.

The product of its (nonzero) digits is 2940, while the sum is 31.

The spelling of 51011172706 in words is "fifty-one billion, eleven million, one hundred seventy-two thousand, seven hundred six".