61173678080 has 60 divisors (see below), whose sum is σ = 146812543500. Its totient is φ = 24469438464.

The previous prime is 61173678077. The next prime is 61173678091. The reversal of 61173678080 is 8087637116.

It can be written as a sum of positive squares in 2 ways, for example, as 36667654144 + 24506023936 = 191488^2 + 156544^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291455 + ... + 455294.

It is an arithmetic number, because the mean of its divisors is an integer number (2446875725).

Almost surely, 2^61173678080 is an apocalyptic number.

It is an amenable number.

61173678080 is an abundant number, since it is smaller than the sum of its proper divisors (85638865420).

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

61173678080 is an frugal number, since it uses more digits than its factorization.

61173678080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746782 (or 746756 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 61173678080 in words is "sixty-one billion, one hundred seventy-three million, six hundred seventy-eight thousand, eighty".