61589432832 has 80 divisors (see below), whose sum is σ = 165611980512. Its totient is φ = 20337889280.

The previous prime is 61589432789. The next prime is 61589432897. The reversal of 61589432832 is 23823498516.

It is a happy 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, 23019 + ... + 351722.

Almost surely, 2^61589432832 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 61589432832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82805990256).

61589432832 is an abundant number, since it is smaller than the sum of its proper divisors (104022547680).

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

61589432832 is a wasteful number, since it uses less digits than its factorization.

61589432832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374869 (or 374853 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The spelling of 61589432832 in words is "sixty-one billion, five hundred eighty-nine million, four hundred thirty-two thousand, eight hundred thirty-two".