61944444084 has 24 divisors (see below), whose sum is σ = 144691317568. Its totient is φ = 20626107840.

The previous prime is 61944444071. The next prime is 61944444139. The reversal of 61944444084 is 48044444916.

61944444084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61944444084² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2743312 + ... + 2765799.

Almost surely, 2^61944444084 is an apocalyptic number.

It is an amenable number.

61944444084 is an abundant number, since it is smaller than the sum of its proper divisors (82746873484).

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

61944444084 is a wasteful number, since it uses less digits than its factorization.

61944444084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510055 (or 5510053 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 48.

The spelling of 61944444084 in words is "sixty-one billion, nine hundred forty-four million, four hundred forty-four thousand, eighty-four".