61339576313 has 2 divisors, whose sum is σ = 61339576314. Its totient is φ = 61339576312.

The previous prime is 61339576303. The next prime is 61339576351. The reversal of 61339576313 is 31367593316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35183630329 + 26155945984 = 187573^2 + 161728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61339576313 is a prime.

It is not a weakly prime, because it can be changed into another prime (61339576303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30669788156 + 30669788157.

It is an arithmetic number, because the mean of its divisors is an integer number (30669788157).

Almost surely, 2^61339576313 is an apocalyptic number.

It is an amenable number.

61339576313 is a deficient number, since it is larger than the sum of its proper divisors (1).

61339576313 is an equidigital number, since it uses as much as digits as its factorization.

61339576313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 47.

The spelling of 61339576313 in words is "sixty-one billion, three hundred thirty-nine million, five hundred seventy-six thousand, three hundred thirteen".