37977447820 has 24 divisors (see below), whose sum is σ = 85887459504. Its totient is φ = 14022442176.

The previous prime is 37977447749. The next prime is 37977447821. The reversal of 37977447820 is 2874477973.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (37977447821) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 73033294 + ... + 73033813.

It is an arithmetic number, because the mean of its divisors is an integer number (3578644146).

Almost surely, 2^37977447820 is an apocalyptic number.

It is an amenable number.

37977447820 is an abundant number, since it is smaller than the sum of its proper divisors (47910011684).

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

37977447820 is a wasteful number, since it uses less digits than its factorization.

37977447820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146067129 (or 146067127 counting only the distinct ones).

The product of its (nonzero) digits is 16595712, while the sum is 58.

The spelling of 37977447820 in words is "thirty-seven billion, nine hundred seventy-seven million, four hundred forty-seven thousand, eight hundred twenty".