61313455431315 has 12 divisors (see below), whose sum is σ = 106276656081024. Its totient is φ = 32700509563344.

The previous prime is 61313455431313. The next prime is 61313455431337. The reversal of 61313455431315 is 51313455431316.

61313455431315 is a `hidden beast` number, since 6 + 1 + 3 + 1 + 34 + 554 + 31 + 31 + 5 = 666.

It is not a de Polignac number, because 61313455431315 - 2¹ = 61313455431313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1362521231807 = 61313455431315 / (6 + 1 + 3 + 1 + 3 + 4 + 5 + 5 + 4 + 3 + 1 + 3 + 1 + 5).

It is not an unprimeable number, because it can be changed into a prime (61313455431313) 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, 681260615859 + ... + 681260615948.

It is an arithmetic number, because the mean of its divisors is an integer number (8856388006752).

Almost surely, 2^{61313455431315} is an apocalyptic number.

61313455431315 is a deficient number, since it is larger than the sum of its proper divisors (44963200649709).

61313455431315 is a wasteful number, since it uses less digits than its factorization.

61313455431315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362521231818 (or 1362521231815 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

Subtracting from 61313455431315 its reverse (51313455431316), we obtain a palindrome (9999999999999).

The spelling of 61313455431315 in words is "sixty-one trillion, three hundred thirteen billion, four hundred fifty-five million, four hundred thirty-one thousand, three hundred fifteen".