11087213238 has 48 divisors (see below), whose sum is σ = 25976583360. Its totient is φ = 3404329728.

The previous prime is 11087213237. The next prime is 11087213239. The reversal of 11087213238 is 83231278011.

It is an interprime number because it is at equal distance from previous prime (11087213237) and next prime (11087213239).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11087213231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 371073 + ... + 399836.

It is an arithmetic number, because the mean of its divisors is an integer number (541178820).

Almost surely, 2^11087213238 is an apocalyptic number.

11087213238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11087213238 is an abundant number, since it is smaller than the sum of its proper divisors (14889370122).

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

11087213238 is a wasteful number, since it uses less digits than its factorization.

11087213238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770981 (or 770978 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 11087213238 in words is "eleven billion, eighty-seven million, two hundred thirteen thousand, two hundred thirty-eight".