61982077444 has 27 divisors (see below), whose sum is σ = 126184896327. Its totient is φ = 26562253704.

The previous prime is 61982077439. The next prime is 61982077447. The reversal of 61982077444 is 44477028916.

The square root of 61982077444 is 248962.

It is a perfect power (a square), and thus also a powerful number.

61982077444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61982077391 and 61982077400.

It is not an unprimeable number, because it can be changed into a prime (61982077447) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3476577 + ... + 3494359.

Almost surely, 2^61982077444 is an apocalyptic number.

61982077444 is the 248962-nd square number.

It is an amenable number.

61982077444 is an abundant number, since it is smaller than the sum of its proper divisors (64202818883).

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

61982077444 is an frugal number, since it uses more digits than its factorization.

61982077444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35584 (or 17792 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 61982077444 in words is "sixty-one billion, nine hundred eighty-two million, seventy-seven thousand, four hundred forty-four".