11561237449792 has 28 divisors (see below), whose sum is σ = 24149295333520. Its totient is φ = 5476375633536.

The previous prime is 11561237449781. The next prime is 11561237449813. The reversal of 11561237449792 is 29794473216511.

It is a super-2 number, since 2×11561237449792² (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 11561237449792.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4753797078 + ... + 4753799509.

It is an arithmetic number, because the mean of its divisors is an integer number (862474833340).

Almost surely, 2^{11561237449792} is an apocalyptic number.

It is an amenable number.

11561237449792 is an abundant number, since it is smaller than the sum of its proper divisors (12588057883728).

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

11561237449792 is an equidigital number, since it uses as much as digits as its factorization.

11561237449792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9507596618 (or 9507596608 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 61.

The spelling of 11561237449792 in words is "eleven trillion, five hundred sixty-one billion, two hundred thirty-seven million, four hundred forty-nine thousand, seven hundred ninety-two".