37197800640 has 2688 divisors, whose sum is σ = 196140994560. Its totient is φ = 6423183360.

The previous prime is 37197800621. The next prime is 37197800693. The reversal of 37197800640 is 4600879173.

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

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1617295669 + ... + 1617295691.

It is an arithmetic number, because the mean of its divisors is an integer number (72969120).

Almost surely, 2^37197800640 is an apocalyptic number.

37197800640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 37197800640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98070497280).

37197800640 is an abundant number, since it is smaller than the sum of its proper divisors (158943193920).

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

37197800640 is a wasteful number, since it uses less digits than its factorization.

37197800640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 37197800640 in words is "thirty-seven billion, one hundred ninety-seven million, eight hundred thousand, six hundred forty".