37890668091 has 16 divisors (see below), whose sum is σ = 53186186240. Its totient is φ = 23928112800.

The previous prime is 37890668063. The next prime is 37890668099. The reversal of 37890668091 is 19086609873.

It is not a de Polignac number, because 37890668091 - 2⁹ = 37890667579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (37890668099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513366 + ... + 582516.

It is an arithmetic number, because the mean of its divisors is an integer number (3324136640).

Almost surely, 2^37890668091 is an apocalyptic number.

37890668091 is a deficient number, since it is larger than the sum of its proper divisors (15295518149).

37890668091 is a wasteful number, since it uses less digits than its factorization.

37890668091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78786.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 37890668091 in words is "thirty-seven billion, eight hundred ninety million, six hundred sixty-eight thousand, ninety-one".