61736609797631 has 16 divisors (see below), whose sum is σ = 62873029390080. Its totient is φ = 60603201267840.

The previous prime is 61736609797601. The next prime is 61736609797697. The reversal of 61736609797631 is 13679790663716.

It is a cyclic number.

It is not a de Polignac number, because 61736609797631 - 2¹⁸ = 61736609535487 is a prime.

It is a super-2 number, since 2×61736609797631² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61736609797601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1023268136 + ... + 1023328466.

It is an arithmetic number, because the mean of its divisors is an integer number (3929564336880).

Almost surely, 2^{61736609797631} is an apocalyptic number.

61736609797631 is a deficient number, since it is larger than the sum of its proper divisors (1136419592449).

61736609797631 is a wasteful number, since it uses less digits than its factorization.

61736609797631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84974.

The product of its (nonzero) digits is 324060912, while the sum is 71.

The spelling of 61736609797631 in words is "sixty-one trillion, seven hundred thirty-six billion, six hundred nine million, seven hundred ninety-seven thousand, six hundred thirty-one".