61579347359 has 16 divisors (see below), whose sum is σ = 63863308320. Its totient is φ = 59306325120.

The previous prime is 61579347337. The next prime is 61579347373. The reversal of 61579347359 is 95374397516.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61579347359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61579347298 and 61579347307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61579347859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26854217 + ... + 26856509.

It is an arithmetic number, because the mean of its divisors is an integer number (3991456770).

Almost surely, 2^61579347359 is an apocalyptic number.

61579347359 is a deficient number, since it is larger than the sum of its proper divisors (2283960961).

61579347359 is a wasteful number, since it uses less digits than its factorization.

61579347359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250.

The product of its digits is 21432600, while the sum is 59.

The spelling of 61579347359 in words is "sixty-one billion, five hundred seventy-nine million, three hundred forty-seven thousand, three hundred fifty-nine".