11217880492 has 24 divisors (see below), whose sum is σ = 24161589536. Its totient is φ = 4437842688.

The previous prime is 11217880451. The next prime is 11217880493. The reversal of 11217880492 is 29408871211.

It is not an unprimeable number, because it can be changed into a prime (11217880493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15408813 + ... + 15409540.

Almost surely, 2^11217880492 is an apocalyptic number.

It is an amenable number.

11217880492 is an abundant number, since it is smaller than the sum of its proper divisors (12943709044).

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

11217880492 is a wasteful number, since it uses less digits than its factorization.

11217880492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30818377 (or 30818375 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 43.

The spelling of 11217880492 in words is "eleven billion, two hundred seventeen million, eight hundred eighty thousand, four hundred ninety-two".