56357135521751 has 4 divisors (see below), whose sum is σ = 56477814613272. Its totient is φ = 56236456430232.

The previous prime is 56357135521747. The next prime is 56357135521807. The reversal of 56357135521751 is 15712553175365.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56357135521751 - 2² = 56357135521747 is a prime.

It is a super-2 number, since 2×56357135521751² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56357132521751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60339545060 + ... + 60339545993.

It is an arithmetic number, because the mean of its divisors is an integer number (14119453653318).

Almost surely, 2^{56357135521751} is an apocalyptic number.

56357135521751 is a deficient number, since it is larger than the sum of its proper divisors (120679091521).

56357135521751 is a wasteful number, since it uses less digits than its factorization.

56357135521751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120679091520.

The product of its digits is 16537500, while the sum is 56.

The spelling of 56357135521751 in words is "fifty-six trillion, three hundred fifty-seven billion, one hundred thirty-five million, five hundred twenty-one thousand, seven hundred fifty-one".