23177155616947 has 4 divisors (see below), whose sum is σ = 23219996940256. Its totient is φ = 23134314293640.

The previous prime is 23177155616843. The next prime is 23177155616959. The reversal of 23177155616947 is 74961655177132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23177155616947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23177155616977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21420660843 + ... + 21420661924.

It is an arithmetic number, because the mean of its divisors is an integer number (5804999235064).

Almost surely, 2^{23177155616947} is an apocalyptic number.

23177155616947 is a deficient number, since it is larger than the sum of its proper divisors (42841323309).

23177155616947 is an equidigital number, since it uses as much as digits as its factorization.

23177155616947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42841323308.

The product of its digits is 66679200, while the sum is 64.

The spelling of 23177155616947 in words is "twenty-three trillion, one hundred seventy-seven billion, one hundred fifty-five million, six hundred sixteen thousand, nine hundred forty-seven".