1387513775015 has 4 divisors (see below), whose sum is σ = 1665016530024. Its totient is φ = 1110011020008.

The previous prime is 1387513774979. The next prime is 1387513775027. The reversal of 1387513775015 is 5105773157831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1387513775015 - 2⁴⁰ = 288002147239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138751377497 + ... + 138751377506.

It is an arithmetic number, because the mean of its divisors is an integer number (416254132506).

Almost surely, 2^{1387513775015} is an apocalyptic number.

1387513775015 is a deficient number, since it is larger than the sum of its proper divisors (277502755009).

1387513775015 is an equidigital number, since it uses as much as digits as its factorization.

1387513775015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277502755008.

The product of its (nonzero) digits is 3087000, while the sum is 53.

The spelling of 1387513775015 in words is "one trillion, three hundred eighty-seven billion, five hundred thirteen million, seven hundred seventy-five thousand, fifteen".