61517160073 has 4 divisors (see below), whose sum is σ = 64754905360. Its totient is φ = 58279414788.

The previous prime is 61517159987. The next prime is 61517160127. The reversal of 61517160073 is 37006171516.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61517160073 - 2²⁵ = 61483605641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61517160773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618872615 + ... + 1618872652.

It is an arithmetic number, because the mean of its divisors is an integer number (16188726340).

Almost surely, 2^61517160073 is an apocalyptic number.

It is an amenable number.

61517160073 is a deficient number, since it is larger than the sum of its proper divisors (3237745287).

61517160073 is a wasteful number, since it uses less digits than its factorization.

61517160073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237745286.

The product of its (nonzero) digits is 26460, while the sum is 37.

The spelling of 61517160073 in words is "sixty-one billion, five hundred seventeen million, one hundred sixty thousand, seventy-three".