61366760172 has 72 divisors (see below), whose sum is σ = 157485758976. Its totient is φ = 20146178304.

The previous prime is 61366760171. The next prime is 61366760173. The reversal of 61366760172 is 27106766316.

61366760172 is a `hidden beast` number, since 6 + 1 + 36 + 6 + 7 + 601 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (61366760171) and next prime (61366760173).

It is not an unprimeable number, because it can be changed into a prime (61366760171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 577378 + ... + 675350.

It is an arithmetic number, because the mean of its divisors is an integer number (2187302208).

Almost surely, 2^61366760172 is an apocalyptic number.

It is an amenable number.

61366760172 is an abundant number, since it is smaller than the sum of its proper divisors (96118998804).

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

61366760172 is a wasteful number, since it uses less digits than its factorization.

61366760172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98247 (or 98242 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 61366760172 in words is "sixty-one billion, three hundred sixty-six million, seven hundred sixty thousand, one hundred seventy-two".