61655593392 has 120 divisors (see below), whose sum is σ = 180822714800. Its totient is φ = 20114279424.

The previous prime is 61655593343. The next prime is 61655593403. The reversal of 61655593392 is 29339555616.

61655593392 is a `hidden beast` number, since 6 + 16 + 5 + 5 + 593 + 39 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 921984 + ... + 986592.

Almost surely, 2^61655593392 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 61655593392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90411357400).

61655593392 is an abundant number, since it is smaller than the sum of its proper divisors (119167121408).

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

61655593392 is a wasteful number, since it uses less digits than its factorization.

61655593392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64720 (or 64661 counting only the distinct ones).

The product of its digits is 6561000, while the sum is 54.

The spelling of 61655593392 in words is "sixty-one billion, six hundred fifty-five million, five hundred ninety-three thousand, three hundred ninety-two".