38847721831352 has 16 divisors (see below), whose sum is σ = 83245118210160. Its totient is φ = 16649023641984.

The previous prime is 38847721831349. The next prime is 38847721831357. The reversal of 38847721831352 is 25313812774883.

It is a happy number.

It is a super-2 number, since 2×38847721831352² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38847721831357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346854659153 + ... + 346854659264.

It is an arithmetic number, because the mean of its divisors is an integer number (5202819888135).

Almost surely, 2^{38847721831352} is an apocalyptic number.

It is an amenable number.

38847721831352 is an abundant number, since it is smaller than the sum of its proper divisors (44397396378808).

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

38847721831352 is a wasteful number, since it uses less digits than its factorization.

38847721831352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693709318430 (or 693709318426 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 62.

The spelling of 38847721831352 in words is "thirty-eight trillion, eight hundred forty-seven billion, seven hundred twenty-one million, eight hundred thirty-one thousand, three hundred fifty-two".