13888763750138 has 4 divisors (see below), whose sum is σ = 20833145625210. Its totient is φ = 6944381875068.

The previous prime is 13888763750123. The next prime is 13888763750149. The reversal of 13888763750138 is 83105736788831.

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

It can be written as a sum of positive squares in only one way, i.e., 13738194141049 + 150569609089 = 3706507^2 + 388033^2 .

It is a super-2 number, since 2×13888763750138² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472190937533 + ... + 3472190937536.

Almost surely, 2^{13888763750138} is an apocalyptic number.

13888763750138 is a deficient number, since it is larger than the sum of its proper divisors (6944381875072).

13888763750138 is an equidigital number, since it uses as much as digits as its factorization.

13888763750138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6944381875071.

The product of its (nonzero) digits is 162570240, while the sum is 68.

The spelling of 13888763750138 in words is "thirteen trillion, eight hundred eighty-eight billion, seven hundred sixty-three million, seven hundred fifty thousand, one hundred thirty-eight".