1388724296512 has 112 divisors (see below), whose sum is σ = 3422129889280. Its totient is φ = 545654361600.

The previous prime is 1388724296471. The next prime is 1388724296567. The reversal of 1388724296512 is 2156924278831.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×1388724296512² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2367564 + ... + 2895307.

Almost surely, 2^{1388724296512} is an apocalyptic number.

It is an amenable number.

1388724296512 is an abundant number, since it is smaller than the sum of its proper divisors (2033405592768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1388724296512 is a wasteful number, since it uses less digits than its factorization.

1388724296512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5262940 (or 5262930 counting only the distinct ones).

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

The spelling of 1388724296512 in words is "one trillion, three hundred eighty-eight billion, seven hundred twenty-four million, two hundred ninety-six thousand, five hundred twelve".