1375137638749 has 16 divisors (see below), whose sum is σ = 1574259648640. Its totient is φ = 1176684615360.

The previous prime is 1375137638737. The next prime is 1375137638767. The reversal of 1375137638749 is 9478367315731.

It is a cyclic number.

It is not a de Polignac number, because 1375137638749 - 2²⁵ = 1375104084317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375137638779) 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, 38064907 + ... + 38101015.

It is an arithmetic number, because the mean of its divisors is an integer number (98391228040).

Almost surely, 2^{1375137638749} is an apocalyptic number.

It is an amenable number.

1375137638749 is a deficient number, since it is larger than the sum of its proper divisors (199122009891).

1375137638749 is an equidigital number, since it uses as much as digits as its factorization.

1375137638749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45220.

The product of its digits is 80015040, while the sum is 64.

The spelling of 1375137638749 in words is "one trillion, three hundred seventy-five billion, one hundred thirty-seven million, six hundred thirty-eight thousand, seven hundred forty-nine".