61655722452 has 24 divisors (see below), whose sum is σ = 159848169600. Its totient is φ = 20551907448.

The previous prime is 61655722433. The next prime is 61655722487. The reversal of 61655722452 is 25422755616.

61655722452 is a `hidden beast` number, since 6 + 1 + 6 + 5 + 572 + 24 + 52 = 666.

It is a super-2 number, since 2×61655722452² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61655722398 and 61655722407.

It is a congruent 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, 285443052 + ... + 285443267.

It is an arithmetic number, because the mean of its divisors is an integer number (6660340400).

Almost surely, 2^61655722452 is an apocalyptic number.

It is an amenable number.

61655722452 is an abundant number, since it is smaller than the sum of its proper divisors (98192447148).

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

61655722452 is a wasteful number, since it uses less digits than its factorization.

61655722452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570886332 (or 570886324 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The spelling of 61655722452 in words is "sixty-one billion, six hundred fifty-five million, seven hundred twenty-two thousand, four hundred fifty-two".