1388559172442 has 32 divisors (see below), whose sum is σ = 2301963081600. Its totient is φ = 624247197120.

The previous prime is 1388559172391. The next prime is 1388559172447. The reversal of 1388559172442 is 2442719558831.

It is not an unprimeable number, because it can be changed into a prime (1388559172447) 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, 4086692 + ... + 4413407.

It is an arithmetic number, because the mean of its divisors is an integer number (71936346300).

Almost surely, 2^{1388559172442} is an apocalyptic number.

1388559172442 is a deficient number, since it is larger than the sum of its proper divisors (913403909158).

1388559172442 is a wasteful number, since it uses less digits than its factorization.

1388559172442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8500278.

The product of its digits is 19353600, while the sum is 59.

The spelling of 1388559172442 in words is "one trillion, three hundred eighty-eight billion, five hundred fifty-nine million, one hundred seventy-two thousand, four hundred forty-two".