61579347307 has 4 divisors (see below), whose sum is σ = 61579868056. Its totient is φ = 61578826560.

The previous prime is 61579347283. The next prime is 61579347337. The reversal of 61579347307 is 70374397516.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61579347307 - 2¹⁵ = 61579314539 is a prime.

It is a super-2 number, since 2×61579347307² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61579347337) 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, 11932 + ... + 351142.

It is an arithmetic number, because the mean of its divisors is an integer number (15394967014).

Almost surely, 2^61579347307 is an apocalyptic number.

61579347307 is a deficient number, since it is larger than the sum of its proper divisors (520749).

61579347307 is a wasteful number, since it uses less digits than its factorization.

61579347307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520748.

The product of its (nonzero) digits is 3333960, while the sum is 52.

The spelling of 61579347307 in words is "sixty-one billion, five hundred seventy-nine million, three hundred forty-seven thousand, three hundred seven".