11388396157 has 4 divisors (see below), whose sum is σ = 11883543840. Its totient is φ = 10893248476.

The previous prime is 11388396133. The next prime is 11388396209. The reversal of 11388396157 is 75169388311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11388396157 - 2¹¹ = 11388394109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11388316157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247573807 + ... + 247573852.

It is an arithmetic number, because the mean of its divisors is an integer number (2970885960).

Almost surely, 2^11388396157 is an apocalyptic number.

It is an amenable number.

11388396157 is a deficient number, since it is larger than the sum of its proper divisors (495147683).

11388396157 is an equidigital number, since it uses as much as digits as its factorization.

11388396157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495147682.

The product of its digits is 1088640, while the sum is 52.

The spelling of 11388396157 in words is "eleven billion, three hundred eighty-eight million, three hundred ninety-six thousand, one hundred fifty-seven".