1375138887615 has 48 divisors (see below), whose sum is σ = 2412616752000. Its totient is φ = 724473581760.

The previous prime is 1375138887569. The next prime is 1375138887653. The reversal of 1375138887615 is 5167888315731.

It is a happy number.

1375138887615 is a `hidden beast` number, since 1 + 3 + 7 + 5 + 1 + 3 + 8 + 8 + 8 + 7 + 615 = 666.

It is not a de Polignac number, because 1375138887615 - 2¹⁵ = 1375138854847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33934636 + ... + 33975134.

It is an arithmetic number, because the mean of its divisors is an integer number (50262849000).

Almost surely, 2^{1375138887615} is an apocalyptic number.

1375138887615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1375138887615 is a deficient number, since it is larger than the sum of its proper divisors (1037477864385).

1375138887615 is a wasteful number, since it uses less digits than its factorization.

1375138887615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49684 (or 49681 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 63.

The spelling of 1375138887615 in words is "one trillion, three hundred seventy-five billion, one hundred thirty-eight million, eight hundred eighty-seven thousand, six hundred fifteen".