61261383192 has 64 divisors (see below), whose sum is σ = 163439493120. Its totient is φ = 19067908608.

The previous prime is 61261383179. The next prime is 61261383221. The reversal of 61261383192 is 29138316216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539328 + ... + 642959.

It is an arithmetic number, because the mean of its divisors is an integer number (2553742080).

Almost surely, 2^61261383192 is an apocalyptic number.

It is an amenable number.

61261383192 is an abundant number, since it is smaller than the sum of its proper divisors (102178109928).

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

61261383192 is a wasteful number, since it uses less digits than its factorization.

61261383192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182440 (or 1182436 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The spelling of 61261383192 in words is "sixty-one billion, two hundred sixty-one million, three hundred eighty-three thousand, one hundred ninety-two".