61576921080 has 96 divisors (see below), whose sum is σ = 201281988960. Its totient is φ = 16325579520.

The previous prime is 61576921073. The next prime is 61576921099. The reversal of 61576921080 is 8012967516.

61576921080 is a `hidden beast` number, since 61 + 576 + 9 + 2 + 10 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 432076 + ... + 556635.

It is an arithmetic number, because the mean of its divisors is an integer number (2096687385).

Almost surely, 2^61576921080 is an apocalyptic number.

61576921080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61576921080 is an abundant number, since it is smaller than the sum of its proper divisors (139705067880).

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

61576921080 is a wasteful number, since it uses less digits than its factorization.

61576921080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988901 (or 988894 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 61576921080 in words is "sixty-one billion, five hundred seventy-six million, nine hundred twenty-one thousand, eighty".