37920005621 has 8 divisors (see below), whose sum is σ = 38332265664. Its totient is φ = 37508181120.

The previous prime is 37920005603. The next prime is 37920005633. The reversal of 37920005621 is 12650002973.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37920005621 - 2¹⁰ = 37920004597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37920004621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67736 + ... + 283598.

It is an arithmetic number, because the mean of its divisors is an integer number (4791533208).

Almost surely, 2^37920005621 is an apocalyptic number.

It is an amenable number.

37920005621 is a deficient number, since it is larger than the sum of its proper divisors (412260043).

37920005621 is a wasteful number, since it uses less digits than its factorization.

37920005621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217771.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 37920005621 in words is "thirty-seven billion, nine hundred twenty million, five thousand, six hundred twenty-one".