61347557232 has 120 divisors (see below), whose sum is σ = 191270570400. Its totient is φ = 18225252864.

The previous prime is 61347557197. The next prime is 61347557239. The reversal of 61347557232 is 23275574316.

61347557232 is a `hidden beast` number, since 6 + 1 + 3 + 4 + 75 + 572 + 3 + 2 = 666.

61347557232 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 (61347557239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 510732 + ... + 619307.

It is an arithmetic number, because the mean of its divisors is an integer number (1593921420).

Almost surely, 2^61347557232 is an apocalyptic number.

It is an amenable number.

61347557232 is an abundant number, since it is smaller than the sum of its proper divisors (129923013168).

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

61347557232 is a wasteful number, since it uses less digits than its factorization.

61347557232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130095 (or 1130086 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The spelling of 61347557232 in words is "sixty-one billion, three hundred forty-seven million, five hundred fifty-seven thousand, two hundred thirty-two".