61582609392 has 80 divisors (see below), whose sum is σ = 167880088320. Its totient is φ = 19398528000.

The previous prime is 61582609369. The next prime is 61582609399. The reversal of 61582609392 is 29390628516.

61582609392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61582609399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281517 + ... + 449907.

It is an arithmetic number, because the mean of its divisors is an integer number (2098501104).

Almost surely, 2^61582609392 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 61582609392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83940044160).

61582609392 is an abundant number, since it is smaller than the sum of its proper divisors (106297478928).

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

61582609392 is a wasteful number, since it uses less digits than its factorization.

61582609392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168822 (or 168816 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 61582609392 in words is "sixty-one billion, five hundred eighty-two million, six hundred nine thousand, three hundred ninety-two".