51352537656013 has 12 divisors (see below), whose sum is σ = 56486824928604. Its totient is φ = 46649823651200.

The previous prime is 51352537655987. The next prime is 51352537656023. The reversal of 51352537656013 is 31065673525315.

It can be written as a sum of positive squares in 2 ways, for example, as 8405001143044 + 42947536512969 = 2899138^2 + 6553437^2 .

It is not a de Polignac number, because 51352537656013 - 2²¹ = 51352535558861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51352537656023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155750506 + ... + 156079867.

It is an arithmetic number, because the mean of its divisors is an integer number (4707235410717).

Almost surely, 2^{51352537656013} is an apocalyptic number.

It is an amenable number.

51352537656013 is a deficient number, since it is larger than the sum of its proper divisors (5134287272591).

51352537656013 is a wasteful number, since it uses less digits than its factorization.

51352537656013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311831756 (or 311831745 counting only the distinct ones).

The product of its (nonzero) digits is 8505000, while the sum is 52.

The spelling of 51352537656013 in words is "fifty-one trillion, three hundred fifty-two billion, five hundred thirty-seven million, six hundred fifty-six thousand, thirteen".