37821057872 has 80 divisors (see below), whose sum is σ = 80208199680. Its totient is φ = 17171481600.

The previous prime is 37821057817. The next prime is 37821057899. The reversal of 37821057872 is 27875012873.

It is a self number, because there is not a number n which added to its sum of digits gives 37821057872.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4613297 + ... + 4621487.

It is an arithmetic number, because the mean of its divisors is an integer number (1002602496).

Almost surely, 2^37821057872 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 37821057872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40104099840).

37821057872 is an abundant number, since it is smaller than the sum of its proper divisors (42387141808).

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

37821057872 is a wasteful number, since it uses less digits than its factorization.

37821057872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8572 (or 8566 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 50.

The spelling of 37821057872 in words is "thirty-seven billion, eight hundred twenty-one million, fifty-seven thousand, eight hundred seventy-two".