38926861286431 has 2 divisors, whose sum is σ = 38926861286432. Its totient is φ = 38926861286430.

The previous prime is 38926861286359. The next prime is 38926861286513. The reversal of 38926861286431 is 13468216862983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38926861286431 - 2¹¹ = 38926861284383 is a prime.

It is a super-2 number, since 2×38926861286431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38926861286231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19463430643215 + 19463430643216.

It is an arithmetic number, because the mean of its divisors is an integer number (19463430643216).

Almost surely, 2^{38926861286431} is an apocalyptic number.

38926861286431 is a deficient number, since it is larger than the sum of its proper divisors (1).

38926861286431 is an equidigital number, since it uses as much as digits as its factorization.

38926861286431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 143327232, while the sum is 67.

The spelling of 38926861286431 in words is "thirty-eight trillion, nine hundred twenty-six billion, eight hundred sixty-one million, two hundred eighty-six thousand, four hundred thirty-one".