61702403831 has 2 divisors, whose sum is σ = 61702403832. Its totient is φ = 61702403830.

The previous prime is 61702403827. The next prime is 61702403843. The reversal of 61702403831 is 13830420716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61702403831 - 2² = 61702403827 is a prime.

It is a super-2 number, since 2×61702403831² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61702403791 and 61702403800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61702402831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30851201915 + 30851201916.

It is an arithmetic number, because the mean of its divisors is an integer number (30851201916).

Almost surely, 2^61702403831 is an apocalyptic number.

61702403831 is a deficient number, since it is larger than the sum of its proper divisors (1).

61702403831 is an equidigital number, since it uses as much as digits as its factorization.

61702403831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 61702403831 in words is "sixty-one billion, seven hundred two million, four hundred three thousand, eight hundred thirty-one".