11111238907390 has 32 divisors (see below), whose sum is σ = 21181460549760. Its totient is φ = 4182117087744.

The previous prime is 11111238907381. The next prime is 11111238907411. The reversal of 11111238907390 is 9370983211111.

It is a happy number.

It is a super-2 number, since 2×11111238907390² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11111238907390.

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, 6563745 + ... + 8081164.

It is an arithmetic number, because the mean of its divisors is an integer number (661920642180).

Almost surely, 2^{11111238907390} is an apocalyptic number.

11111238907390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111238907390 is a deficient number, since it is larger than the sum of its proper divisors (10070221642370).

11111238907390 is a wasteful number, since it uses less digits than its factorization.

11111238907390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14649396.

The product of its (nonzero) digits is 81648, while the sum is 46.

The spelling of 11111238907390 in words is "eleven trillion, one hundred eleven billion, two hundred thirty-eight million, nine hundred seven thousand, three hundred ninety".