61582379456 has 28 divisors (see below), whose sum is σ = 131602730952. Its totient is φ = 28422636288.

The previous prime is 61582379389. The next prime is 61582379461. The reversal of 61582379456 is 65497328516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37007810 + ... + 37009473.

It is an arithmetic number, because the mean of its divisors is an integer number (4700097534).

Almost surely, 2^61582379456 is an apocalyptic number.

It is an amenable number.

61582379456 is an abundant number, since it is smaller than the sum of its proper divisors (70020351496).

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

61582379456 is a wasteful number, since it uses less digits than its factorization.

61582379456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74017308 (or 74017298 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 56.

The spelling of 61582379456 in words is "sixty-one billion, five hundred eighty-two million, three hundred seventy-nine thousand, four hundred fifty-six".