11747355074981 has 4 divisors (see below), whose sum is σ = 11747449375200. Its totient is φ = 11747260774764.

The previous prime is 11747355074947. The next prime is 11747355074989. The reversal of 11747355074981 is 18947055374711.

It is a happy number.

11747355074981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11747355074981 - 2²² = 11747350880677 is a prime.

It is a super-2 number, since 2×11747355074981² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11747355074989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46963001 + ... + 47212478.

It is an arithmetic number, because the mean of its divisors is an integer number (2936862343800).

Almost surely, 2^{11747355074981} is an apocalyptic number.

It is an amenable number.

11747355074981 is a deficient number, since it is larger than the sum of its proper divisors (94300219).

11747355074981 is an equidigital number, since it uses as much as digits as its factorization.

11747355074981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94300218.

The product of its (nonzero) digits is 29635200, while the sum is 62.

The spelling of 11747355074981 in words is "eleven trillion, seven hundred forty-seven billion, three hundred fifty-five million, seventy-four thousand, nine hundred eighty-one".