51642893156 has 24 divisors (see below), whose sum is σ = 91479581760. Its totient is φ = 25505976672.

The previous prime is 51642893143. The next prime is 51642893161. The reversal of 51642893156 is 65139824615.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2861810 + ... + 2879798.

It is an arithmetic number, because the mean of its divisors is an integer number (3811649240).

Almost surely, 2^51642893156 is an apocalyptic number.

It is an amenable number.

51642893156 is a deficient number, since it is larger than the sum of its proper divisors (39836688604).

51642893156 is a wasteful number, since it uses less digits than its factorization.

51642893156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26723 (or 26721 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 50.

The spelling of 51642893156 in words is "fifty-one billion, six hundred forty-two million, eight hundred ninety-three thousand, one hundred fifty-six".