1388088331357 has 48 divisors (see below), whose sum is σ = 1798628160000. Its totient is φ = 1060702231680.

The previous prime is 1388088331291. The next prime is 1388088331391. The reversal of 1388088331357 is 7531338808831.

It is a happy number.

It is not a de Polignac number, because 1388088331357 - 2²⁷ = 1387954113629 is a prime.

It is a super-2 number, since 2×1388088331357² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388088331657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9783319 + ... + 9924187.

It is an arithmetic number, because the mean of its divisors is an integer number (37471420000).

Almost surely, 2^{1388088331357} is an apocalyptic number.

It is an amenable number.

1388088331357 is a deficient number, since it is larger than the sum of its proper divisors (410539828643).

1388088331357 is a wasteful number, since it uses less digits than its factorization.

1388088331357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141426 (or 141419 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 1388088331357 in words is "one trillion, three hundred eighty-eight billion, eighty-eight million, three hundred thirty-one thousand, three hundred fifty-seven".