38221772962688 has 64 divisors (see below), whose sum is σ = 88798761996000. Its totient is φ = 16380759822336.

The previous prime is 38221772962621. The next prime is 38221772962691. The reversal of 38221772962688 is 88626927712283.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×38221772962688² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435244145 + ... + 435331952.

Almost surely, 2^{38221772962688} is an apocalyptic number.

It is an amenable number.

38221772962688 is an abundant number, since it is smaller than the sum of its proper divisors (50576989033312).

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

38221772962688 is an frugal number, since it uses more digits than its factorization.

38221772962688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870576132 (or 870576106 counting only the distinct ones).

The product of its digits is 390168576, while the sum is 71.

The spelling of 38221772962688 in words is "thirty-eight trillion, two hundred twenty-one billion, seven hundred seventy-two million, nine hundred sixty-two thousand, six hundred eighty-eight".