38399917312 has 36 divisors (see below), whose sum is σ = 76685481796. Its totient is φ = 19191029760.

The previous prime is 38399917307. The next prime is 38399917313. The reversal of 38399917312 is 21371999383.

It can be written as a sum of positive squares in 2 ways, for example, as 12280185856 + 26119731456 = 110816^2 + 161616^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38399917313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534808 + ... + 602344.

Almost surely, 2^38399917312 is an apocalyptic number.

38399917312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38399917312 is a deficient number, since it is larger than the sum of its proper divisors (38285564484).

38399917312 is an equidigital number, since it uses as much as digits as its factorization.

38399917312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69774 (or 69760 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 55.

The spelling of 38399917312 in words is "thirty-eight billion, three hundred ninety-nine million, nine hundred seventeen thousand, three hundred twelve".