11781325500840 has 128 divisors (see below), whose sum is σ = 44881240032000. Its totient is φ = 2692874398464.

The previous prime is 11781325500823. The next prime is 11781325500869. The reversal of 11781325500840 is 4800552318711.

11781325500840 is a `hidden beast` number, since 1 + 1 + 7 + 8 + 13 + 2 + 550 + 0 + 84 + 0 = 666.

11781325500840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779180635 + ... + 779195754.

It is an arithmetic number, because the mean of its divisors is an integer number (350634687750).

Almost surely, 2^{11781325500840} is an apocalyptic number.

11781325500840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11781325500840 is an abundant number, since it is smaller than the sum of its proper divisors (33099914531160).

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

11781325500840 is a wasteful number, since it uses less digits than its factorization.

11781325500840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558376416 (or 1558376406 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The spelling of 11781325500840 in words is "eleven trillion, seven hundred eighty-one billion, three hundred twenty-five million, five hundred thousand, eight hundred forty".