2638875001388 has 12 divisors (see below), whose sum is σ = 4651739510712. Its totient is φ = 1309806569760.

The previous prime is 2638875001379. The next prime is 2638875001391. The reversal of 2638875001388 is 8831005788362.

It is a super-2 number, since 2×2638875001388² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2407732118 + ... + 2407733213.

It is an arithmetic number, because the mean of its divisors is an integer number (387644959226).

Almost surely, 2^{2638875001388} is an apocalyptic number.

It is an amenable number.

2638875001388 is a deficient number, since it is larger than the sum of its proper divisors (2012864509324).

2638875001388 is a wasteful number, since it uses less digits than its factorization.

2638875001388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815465472 (or 4815465470 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 2638875001388 in words is "two trillion, six hundred thirty-eight billion, eight hundred seventy-five million, one thousand, three hundred eighty-eight".