37427990166 has 72 divisors (see below), whose sum is σ = 96778359720. Its totient is φ = 10690868160.

The previous prime is 37427990153. The next prime is 37427990191. The reversal of 37427990166 is 66109972473.

It is a happy number.

37427990166 is a `hidden beast` number, since 374 + 27 + 9 + 90 + 166 = 666.

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

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 9949726 + ... + 9953486.

It is an arithmetic number, because the mean of its divisors is an integer number (1344143885).

Almost surely, 2^37427990166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 37427990166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48389179860).

37427990166 is an abundant number, since it is smaller than the sum of its proper divisors (59350369554).

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

37427990166 is an frugal number, since it uses more digits than its factorization.

37427990166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7547 (or 3773 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

Multiplying 37427990166 by its sum of digits (54), we get a square (2021111468964 = 1421658²).

37427990166 divided by its sum of digits (54) gives a square (693110929 = 26327²).

The spelling of 37427990166 in words is "thirty-seven billion, four hundred twenty-seven million, nine hundred ninety thousand, one hundred sixty-six".