61031664832 has 14 divisors (see below), whose sum is σ = 121109710028. Its totient is φ = 30515832384.

The previous prime is 61031664781. The next prime is 61031664833. The reversal of 61031664832 is 23846613016.

It is a super-2 number, since 2×61031664832² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61031664833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 476809818 + ... + 476809945.

Almost surely, 2^61031664832 is an apocalyptic number.

It is an amenable number.

61031664832 is a deficient number, since it is larger than the sum of its proper divisors (60078045196).

61031664832 is an equidigital number, since it uses as much as digits as its factorization.

61031664832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953619775 (or 953619765 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 61031664832 in words is "sixty-one billion, thirty-one million, six hundred sixty-four thousand, eight hundred thirty-two".