11561231912740 has 24 divisors (see below), whose sum is σ = 24279315258240. Its totient is φ = 4624354052448.

The previous prime is 11561231912719. The next prime is 11561231912821. The reversal of 11561231912740 is 4721913216511.

11561231912740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7984780 + ... + 9320899.

It is an arithmetic number, because the mean of its divisors is an integer number (1011638135760).

Almost surely, 2^{11561231912740} is an apocalyptic number.

11561231912740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11561231912740 is an abundant number, since it is smaller than the sum of its proper divisors (12718083345500).

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

11561231912740 is a wasteful number, since it uses less digits than its factorization.

11561231912740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17339091 (or 17339089 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 11561231912740 in words is "eleven trillion, five hundred sixty-one billion, two hundred thirty-one million, nine hundred twelve thousand, seven hundred forty".