38221217064 has 64 divisors (see below), whose sum is σ = 106202030400. Its totient is φ = 12736567872.

The previous prime is 38221217051. The next prime is 38221217107. The reversal of 38221217064 is 46071212283.

It is a happy number.

38221217064 is a `hidden beast` number, since 382 + 2 + 1 + 217 + 0 + 64 = 666.

It is a super-2 number, since 2×38221217064² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 743439 + ... + 793185.

It is an arithmetic number, because the mean of its divisors is an integer number (1659406725).

Almost surely, 2^38221217064 is an apocalyptic number.

It is an amenable number.

38221217064 is an abundant number, since it is smaller than the sum of its proper divisors (67980813336).

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

38221217064 is a wasteful number, since it uses less digits than its factorization.

38221217064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53319 (or 53309 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 38221217064 in words is "thirty-eight billion, two hundred twenty-one million, two hundred seventeen thousand, sixty-four".