138367766415 has 16 divisors (see below), whose sum is σ = 224421146208. Its totient is φ = 72785235456.

The previous prime is 138367766413. The next prime is 138367766417. The reversal of 138367766415 is 514667763831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (138367766413) and next prime (138367766417).

It is not a de Polignac number, because 138367766415 - 2¹ = 138367766413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138367766413) 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, 63180534 + ... + 63182723.

It is an arithmetic number, because the mean of its divisors is an integer number (14026321638).

Almost surely, 2^138367766415 is an apocalyptic number.

138367766415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138367766415 is a deficient number, since it is larger than the sum of its proper divisors (86053379793).

138367766415 is a wasteful number, since it uses less digits than its factorization.

138367766415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126363338.

The product of its digits is 15240960, while the sum is 57.

The spelling of 138367766415 in words is "one hundred thirty-eight billion, three hundred sixty-seven million, seven hundred sixty-six thousand, four hundred fifteen".