61312570453 has 4 divisors (see below), whose sum is σ = 61919625708. Its totient is φ = 60705515200.

The previous prime is 61312570409. The next prime is 61312570499. The reversal of 61312570453 is 35407521316.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58632748164 + 2679822289 = 242142^2 + 51767^2 .

It is a cyclic number.

It is not a de Polignac number, because 61312570453 - 2²⁵ = 61279016021 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 (61312573453) 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, 303527476 + ... + 303527677.

It is an arithmetic number, because the mean of its divisors is an integer number (15479906427).

Almost surely, 2^61312570453 is an apocalyptic number.

It is an amenable number.

61312570453 is a deficient number, since it is larger than the sum of its proper divisors (607055255).

61312570453 is a wasteful number, since it uses less digits than its factorization.

61312570453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607055254.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 61312570453 in words is "sixty-one billion, three hundred twelve million, five hundred seventy thousand, four hundred fifty-three".