37891161616 has 480 divisors, whose sum is σ = 103353384960. Its totient is φ = 13115520000.

The previous prime is 37891161587. The next prime is 37891161767. The reversal of 37891161616 is 61616119873.

It is a self number, because there is not a number n which added to its sum of digits gives 37891161616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 375159966 + ... + 375160066.

It is an arithmetic number, because the mean of its divisors is an integer number (215319552).

Almost surely, 2^37891161616 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 37891161616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51676692480).

37891161616 is an abundant number, since it is smaller than the sum of its proper divisors (65462223344).

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

37891161616 is a wasteful number, since it uses less digits than its factorization.

37891161616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 218 counting only the distinct ones).

The product of its digits is 326592, while the sum is 49.

The spelling of 37891161616 in words is "thirty-seven billion, eight hundred ninety-one million, one hundred sixty-one thousand, six hundred sixteen".