37815866712 has 160 divisors (see below), whose sum is σ = 115245530400. Its totient is φ = 11515447296.

The previous prime is 37815866663. The next prime is 37815866717. The reversal of 37815866712 is 21766851873.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37815866717) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 793989 + ... + 840267.

It is an arithmetic number, because the mean of its divisors is an integer number (720284565).

Almost surely, 2^37815866712 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 37815866712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57622765200).

37815866712 is an abundant number, since it is smaller than the sum of its proper divisors (77429663688).

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

37815866712 is a wasteful number, since it uses less digits than its factorization.

37815866712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46407 (or 46394 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The spelling of 37815866712 in words is "thirty-seven billion, eight hundred fifteen million, eight hundred sixty-six thousand, seven hundred twelve".