61579347337 has 2 divisors, whose sum is σ = 61579347338. Its totient is φ = 61579347336.

The previous prime is 61579347283. The next prime is 61579347373. The reversal of 61579347337 is 73374397516.

Together with next prime (61579347373) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59838455161 + 1740892176 = 244619^2 + 41724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61579347337 is a prime.

It is not a weakly prime, because it can be changed into another prime (61579347437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30789673668 + 30789673669.

It is an arithmetic number, because the mean of its divisors is an integer number (30789673669).

Almost surely, 2^61579347337 is an apocalyptic number.

It is an amenable number.

61579347337 is a deficient number, since it is larger than the sum of its proper divisors (1).

61579347337 is an equidigital number, since it uses as much as digits as its factorization.

61579347337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10001880, while the sum is 55.

The spelling of 61579347337 in words is "sixty-one billion, five hundred seventy-nine million, three hundred forty-seven thousand, three hundred thirty-seven".