61760558831 has 2 divisors, whose sum is σ = 61760558832. Its totient is φ = 61760558830.

The previous prime is 61760558791. The next prime is 61760558861. The reversal of 61760558831 is 13885506716.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61760558831 is a prime.

It is a super-2 number, since 2×61760558831² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61760558831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61760558861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30880279415 + 30880279416.

It is an arithmetic number, because the mean of its divisors is an integer number (30880279416).

Almost surely, 2^61760558831 is an apocalyptic number.

61760558831 is a deficient number, since it is larger than the sum of its proper divisors (1).

61760558831 is an equidigital number, since it uses as much as digits as its factorization.

61760558831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 61760558831 in words is "sixty-one billion, seven hundred sixty million, five hundred fifty-eight thousand, eight hundred thirty-one".