11781355525445 has 8 divisors (see below), whose sum is σ = 15422865415200. Its totient is φ = 8568258563920.

The previous prime is 11781355525441. The next prime is 11781355525453. The reversal of 11781355525445 is 54452555318711.

11781355525445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11781355525445 - 2² = 11781355525441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11781355525441) 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, 107103231995 + ... + 107103232104.

It is an arithmetic number, because the mean of its divisors is an integer number (1927858176900).

Almost surely, 2^{11781355525445} is an apocalyptic number.

It is an amenable number.

11781355525445 is a deficient number, since it is larger than the sum of its proper divisors (3641509889755).

11781355525445 is a wasteful number, since it uses less digits than its factorization.

11781355525445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214206464115.

The product of its digits is 16800000, while the sum is 56.

The spelling of 11781355525445 in words is "eleven trillion, seven hundred eighty-one billion, three hundred fifty-five million, five hundred twenty-five thousand, four hundred forty-five".