61996161024 has 720 divisors, whose sum is σ = 223686262800. Its totient is φ = 17037361152.

The previous prime is 61996160987. The next prime is 61996161037. The reversal of 61996161024 is 42016169916.

It is a happy number.

61996161024 is a `hidden beast` number, since 6 + 1 + 9 + 9 + 6 + 1 + 610 + 24 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 235726717 + ... + 235726979.

It is an arithmetic number, because the mean of its divisors is an integer number (310675365).

Almost surely, 2^61996161024 is an apocalyptic number.

61996161024 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61996161024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111843131400).

61996161024 is an abundant number, since it is smaller than the sum of its proper divisors (161690101776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61996161024 is a wasteful number, since it uses less digits than its factorization.

61996161024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 61996161024 in words is "sixty-one billion, nine hundred ninety-six million, one hundred sixty-one thousand, twenty-four".