37642197642221 has 32 divisors (see below), whose sum is σ = 42101136806400. Its totient is φ = 33497882449920.

The previous prime is 37642197642169. The next prime is 37642197642233. The reversal of 37642197642221 is 12224679124673.

It is a happy number.

37642197642221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 37642197642221 - 2⁶ = 37642197642157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37642197642241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257639036 + ... + 257785098.

It is an arithmetic number, because the mean of its divisors is an integer number (1315660525200).

Almost surely, 2^{37642197642221} is an apocalyptic number.

It is an amenable number.

37642197642221 is a deficient number, since it is larger than the sum of its proper divisors (4458939164179).

37642197642221 is a wasteful number, since it uses less digits than its factorization.

37642197642221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158789.

The product of its digits is 12192768, while the sum is 56.

The spelling of 37642197642221 in words is "thirty-seven trillion, six hundred forty-two billion, one hundred ninety-seven million, six hundred forty-two thousand, two hundred twenty-one".