37431681320 has 128 divisors (see below), whose sum is σ = 93549012480. Its totient is φ = 13364736000.

The previous prime is 37431681311. The next prime is 37431681323. The reversal of 37431681320 is 2318613473.

It is a super-2 number, since 2×37431681320² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (37431681323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23645249 + ... + 23646831.

It is an arithmetic number, because the mean of its divisors is an integer number (730851660).

Almost surely, 2^37431681320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 37431681320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46774506240).

37431681320 is an abundant number, since it is smaller than the sum of its proper divisors (56117331160).

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

37431681320 is a wasteful number, since it uses less digits than its factorization.

37431681320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547 (or 2543 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 37431681320 in words is "thirty-seven billion, four hundred thirty-one million, six hundred eighty-one thousand, three hundred twenty".