38455464131821 has 32 divisors (see below), whose sum is σ = 42429612865536. Its totient is φ = 34563907056000.

The previous prime is 38455464131797. The next prime is 38455464131839. The reversal of 38455464131821 is 12813146455483.

It is a cyclic number.

It is not a de Polignac number, because 38455464131821 - 2⁹ = 38455464131309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38455464171821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232999290 + ... + 233164276.

It is an arithmetic number, because the mean of its divisors is an integer number (1325925402048).

Almost surely, 2^{38455464131821} is an apocalyptic number.

It is an amenable number.

38455464131821 is a deficient number, since it is larger than the sum of its proper divisors (3974148733715).

38455464131821 is a wasteful number, since it uses less digits than its factorization.

38455464131821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165873.

The product of its digits is 11059200, while the sum is 55.

The spelling of 38455464131821 in words is "thirty-eight trillion, four hundred fifty-five billion, four hundred sixty-four million, one hundred thirty-one thousand, eight hundred twenty-one".