38121575385 has 16 divisors (see below), whose sum is σ = 61060199040. Its totient is φ = 20309614080.

The previous prime is 38121575381. The next prime is 38121575419. The reversal of 38121575385 is 58357512183.

It is not a de Polignac number, because 38121575385 - 2² = 38121575381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38121575381) 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, 1353901 + ... + 1381770.

It is an arithmetic number, because the mean of its divisors is an integer number (3816262440).

Almost surely, 2^38121575385 is an apocalyptic number.

It is an amenable number.

38121575385 is a deficient number, since it is larger than the sum of its proper divisors (22938623655).

38121575385 is a wasteful number, since it uses less digits than its factorization.

38121575385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736608.

The product of its digits is 1008000, while the sum is 48.

The spelling of 38121575385 in words is "thirty-eight billion, one hundred twenty-one million, five hundred seventy-five thousand, three hundred eighty-five".