51516355536367 has 32 divisors (see below), whose sum is σ = 56128528339200. Its totient is φ = 47127769463808.

The previous prime is 51516355536361. The next prime is 51516355536407. The reversal of 51516355536367 is 76363555361515.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51516355536367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51516355536361) 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, 25541233 + ... + 27484309.

It is an arithmetic number, because the mean of its divisors is an integer number (1754016510600).

Almost surely, 2^{51516355536367} is an apocalyptic number.

51516355536367 is a deficient number, since it is larger than the sum of its proper divisors (4612172802833).

51516355536367 is a wasteful number, since it uses less digits than its factorization.

51516355536367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943575.

The product of its digits is 127575000, while the sum is 61.

The spelling of 51516355536367 in words is "fifty-one trillion, five hundred sixteen billion, three hundred fifty-five million, five hundred thirty-six thousand, three hundred sixty-seven".