61162713769 has 2 divisors, whose sum is σ = 61162713770. Its totient is φ = 61162713768.

The previous prime is 61162713737. The next prime is 61162713811. The reversal of 61162713769 is 96731726116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47934723600 + 13227990169 = 218940^2 + 115013^2 .

It is a cyclic number.

It is not a de Polignac number, because 61162713769 - 2⁵ = 61162713737 is a prime.

It is a super-2 number, since 2×61162713769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61162713719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30581356884 + 30581356885.

It is an arithmetic number, because the mean of its divisors is an integer number (30581356885).

Almost surely, 2^61162713769 is an apocalyptic number.

It is an amenable number.

61162713769 is a deficient number, since it is larger than the sum of its proper divisors (1).

61162713769 is an equidigital number, since it uses as much as digits as its factorization.

61162713769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 49.

The spelling of 61162713769 in words is "sixty-one billion, one hundred sixty-two million, seven hundred thirteen thousand, seven hundred sixty-nine".