61392656624 has 80 divisors (see below), whose sum is σ = 128814672000. Its totient is φ = 28177079040.

The previous prime is 61392656621. The next prime is 61392656627. The reversal of 61392656624 is 42665629316.

It is an interprime number because it is at equal distance from previous prime (61392656621) and next prime (61392656627).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61392656621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34354259 + ... + 34356045.

It is an arithmetic number, because the mean of its divisors is an integer number (1610183400).

Almost surely, 2^61392656624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61392656624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64407336000).

61392656624 is an abundant number, since it is smaller than the sum of its proper divisors (67422015376).

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

61392656624 is a wasteful number, since it uses less digits than its factorization.

61392656624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638 (or 2632 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 50.

The spelling of 61392656624 in words is "sixty-one billion, three hundred ninety-two million, six hundred fifty-six thousand, six hundred twenty-four".