51506320952 has 16 divisors (see below), whose sum is σ = 96578057400. Its totient is φ = 25752172320.

The previous prime is 51506320771. The next prime is 51506320967. The reversal of 51506320952 is 25902360515.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128174 + ... + 345602.

Almost surely, 2^51506320952 is an apocalyptic number.

It is an amenable number.

51506320952 is a deficient number, since it is larger than the sum of its proper divisors (45071736448).

51506320952 is a wasteful number, since it uses less digits than its factorization.

51506320952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247046 (or 247042 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 51506320952 in words is "fifty-one billion, five hundred six million, three hundred twenty thousand, nine hundred fifty-two".