51616395942 has 32 divisors (see below), whose sum is σ = 109447900800. Its totient is φ = 16182643968.

The previous prime is 51616395931. The next prime is 51616395949. The reversal of 51616395942 is 24959361615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51616395949) 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, 1612843 + ... + 1644534.

It is an arithmetic number, because the mean of its divisors is an integer number (3420246900).

Almost surely, 2^51616395942 is an apocalyptic number.

51616395942 is an abundant number, since it is smaller than the sum of its proper divisors (57831504858).

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

51616395942 is a wasteful number, since it uses less digits than its factorization.

51616395942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257540.

The product of its digits is 1749600, while the sum is 51.

The spelling of 51616395942 in words is "fifty-one billion, six hundred sixteen million, three hundred ninety-five thousand, nine hundred forty-two".