11621665254347 has 4 divisors (see below), whose sum is σ = 11666885741976. Its totient is φ = 11576444766720.

The previous prime is 11621665254301. The next prime is 11621665254413. The reversal of 11621665254347 is 74345256612611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11621665254347 - 2⁸ = 11621665254091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11621665254047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22610243429 + ... + 22610243942.

It is an arithmetic number, because the mean of its divisors is an integer number (2916721435494).

Almost surely, 2^{11621665254347} is an apocalyptic number.

11621665254347 is a deficient number, since it is larger than the sum of its proper divisors (45220487629).

11621665254347 is an equidigital number, since it uses as much as digits as its factorization.

11621665254347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45220487628.

The product of its digits is 7257600, while the sum is 53.

The spelling of 11621665254347 in words is "eleven trillion, six hundred twenty-one billion, six hundred sixty-five million, two hundred fifty-four thousand, three hundred forty-seven".