61365456315 has 12 divisors (see below), whose sum is σ = 106366791024. Its totient is φ = 32728243344.

The previous prime is 61365456289. The next prime is 61365456353. The reversal of 61365456315 is 51365456316.

It is a happy number.

61365456315 is a `hidden beast` number, since 6 + 1 + 3 + 6 + 5 + 4 + 5 + 631 + 5 = 666.

It is not a de Polignac number, because 61365456315 - 2⁸ = 61365456059 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: 1363676807 = 61365456315 / (6 + 1 + 3 + 6 + 5 + 4 + 5 + 6 + 3 + 1 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681838359 + ... + 681838448.

It is an arithmetic number, because the mean of its divisors is an integer number (8863899252).

Almost surely, 2^61365456315 is an apocalyptic number.

61365456315 is a deficient number, since it is larger than the sum of its proper divisors (45001334709).

61365456315 is a wasteful number, since it uses less digits than its factorization.

61365456315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363676818 (or 1363676815 counting only the distinct ones).

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

Subtracting from 61365456315 its reverse (51365456316), we obtain a palindrome (9999999999).

The spelling of 61365456315 in words is "sixty-one billion, three hundred sixty-five million, four hundred fifty-six thousand, three hundred fifteen".