61772415740 has 48 divisors (see below), whose sum is σ = 148280896512. Its totient is φ = 21175242816.

The previous prime is 61772415709. The next prime is 61772415773. The reversal of 61772415740 is 4751427716.

It is a junction number, because it is equal to n+sod(n) for n = 61772415691 and 61772415700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789047 + ... + 863793.

It is an arithmetic number, because the mean of its divisors is an integer number (3089185344).

Almost surely, 2^61772415740 is an apocalyptic number.

It is an amenable number.

61772415740 is an abundant number, since it is smaller than the sum of its proper divisors (86508480772).

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

61772415740 is a wasteful number, since it uses less digits than its factorization.

61772415740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80666 (or 80664 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 61772415740 in words is "sixty-one billion, seven hundred seventy-two million, four hundred fifteen thousand, seven hundred forty".