51831604066 has 32 divisors (see below), whose sum is σ = 85920756480. Its totient is φ = 23252985600.

The previous prime is 51831604061. The next prime is 51831604073. The reversal of 51831604066 is 66040613815.

It is not an unprimeable number, because it can be changed into a prime (51831604061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8201940 + ... + 8208256.

It is an arithmetic number, because the mean of its divisors is an integer number (2685023640).

Almost surely, 2^51831604066 is an apocalyptic number.

51831604066 is a deficient number, since it is larger than the sum of its proper divisors (34089152414).

51831604066 is a wasteful number, since it uses less digits than its factorization.

51831604066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11130.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 51831604066 in words is "fifty-one billion, eight hundred thirty-one million, six hundred four thousand, sixty-six".