11388117240 has 112 divisors (see below), whose sum is σ = 38417419800. Its totient is φ = 3036823488.

The previous prime is 11388117211. The next prime is 11388117253. The reversal of 11388117240 is 4271188311.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11388117195 and 11388117204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 166110 + ... + 224429.

Almost surely, 2^11388117240 is an apocalyptic number.

11388117240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11388117240 is an abundant number, since it is smaller than the sum of its proper divisors (27029302560).

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

11388117240 is an equidigital number, since it uses as much as digits as its factorization.

11388117240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390568 (or 390549 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The spelling of 11388117240 in words is "eleven billion, three hundred eighty-eight million, one hundred seventeen thousand, two hundred forty".