38678653383721 has 16 divisors (see below), whose sum is σ = 41721681355200. Its totient is φ = 35645329931328.

The previous prime is 38678653383637. The next prime is 38678653383739. The reversal of 38678653383721 is 12738335687683.

It is not a de Polignac number, because 38678653383721 - 2²⁹ = 38678116512809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38678653383791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34777470 + ... + 35872408.

It is an arithmetic number, because the mean of its divisors is an integer number (2607605084700).

Almost surely, 2^{38678653383721} is an apocalyptic number.

It is an amenable number.

38678653383721 is a deficient number, since it is larger than the sum of its proper divisors (3043027971479).

38678653383721 is a wasteful number, since it uses less digits than its factorization.

38678653383721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099368.

The product of its digits is 731566080, while the sum is 70.

The spelling of 38678653383721 in words is "thirty-eight trillion, six hundred seventy-eight billion, six hundred fifty-three million, three hundred eighty-three thousand, seven hundred twenty-one".