38121213713 has 48 divisors (see below), whose sum is σ = 43612627968. Its totient is φ = 33278968800.

The previous prime is 38121213709. The next prime is 38121213721. The reversal of 38121213713 is 31731212183.

It is not a de Polignac number, because 38121213713 - 2² = 38121213709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38121213713.

It is not an unprimeable number, because it can be changed into a prime (38121213733) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59286170 + ... + 59286812.

It is an arithmetic number, because the mean of its divisors is an integer number (908596416).

Almost surely, 2^38121213713 is an apocalyptic number.

It is an amenable number.

38121213713 is a deficient number, since it is larger than the sum of its proper divisors (5491414255).

38121213713 is a wasteful number, since it uses less digits than its factorization.

38121213713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906 (or 895 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

Adding to 38121213713 its reverse (31731212183), we get a palindrome (69852425896).

The spelling of 38121213713 in words is "thirty-eight billion, one hundred twenty-one million, two hundred thirteen thousand, seven hundred thirteen".