61608629687220 has 216 divisors, whose sum is σ = 234757732215552. Its totient is φ = 12801793150080.

The previous prime is 61608629687197. The next prime is 61608629687239. The reversal of 61608629687220 is 2278692680616.

61608629687220 is a `hidden beast` number, since 61 + 60 + 8 + 6 + 296 + 8 + 7 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 201896044 + ... + 202200963.

Almost surely, 2^{61608629687220} is an apocalyptic number.

61608629687220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61608629687220 is an abundant number, since it is smaller than the sum of its proper divisors (173149102528332).

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

61608629687220 is a wasteful number, since it uses less digits than its factorization.

61608629687220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404097051 (or 404097035 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 61608629687220 in words is "sixty-one trillion, six hundred eight billion, six hundred twenty-nine million, six hundred eighty-seven thousand, two hundred twenty".