37866944664 has 192 divisors, whose sum is σ = 110073600000. Its totient is φ = 12183125760.

The previous prime is 37866944663. The next prime is 37866944671. The reversal of 37866944664 is 46644966873.

37866944664 is a `hidden beast` number, since 3 + 7 + 86 + 6 + 94 + 466 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37866944663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36097612 + ... + 36098660.

It is an arithmetic number, because the mean of its divisors is an integer number (573300000).

Almost surely, 2^37866944664 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 37866944664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55036800000).

37866944664 is an abundant number, since it is smaller than the sum of its proper divisors (72206655336).

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

37866944664 is a wasteful number, since it uses less digits than its factorization.

37866944664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700 (or 1684 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 63.

The spelling of 37866944664 in words is "thirty-seven billion, eight hundred sixty-six million, nine hundred forty-four thousand, six hundred sixty-four".