11399126238 has 24 divisors (see below), whose sum is σ = 24834567576. Its totient is φ = 3778714800.

The previous prime is 11399126201. The next prime is 11399126267. The reversal of 11399126238 is 83262199311.

It is a happy number.

11399126238 is a `hidden beast` number, since 1 + 1 + 3 + 9 + 9 + 12 + 623 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 11399126193 and 11399126202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1746148 + ... + 1752663.

It is an arithmetic number, because the mean of its divisors is an integer number (1034773649).

Almost surely, 2^11399126238 is an apocalyptic number.

11399126238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11399126238 is an abundant number, since it is smaller than the sum of its proper divisors (13435441338).

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

11399126238 is a wasteful number, since it uses less digits than its factorization.

11399126238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499000 (or 3498997 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The spelling of 11399126238 in words is "eleven billion, three hundred ninety-nine million, one hundred twenty-six thousand, two hundred thirty-eight".