23847357317155 has 32 divisors (see below), whose sum is σ = 30016572153984. Its totient is φ = 18153507373056.

The previous prime is 23847357317153. The next prime is 23847357317167. The reversal of 23847357317155 is 55171375374832.

It is a cyclic number.

It is not a de Polignac number, because 23847357317155 - 2¹ = 23847357317153 is a prime.

It is a super-2 number, since 2×23847357317155² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23847357317093 and 23847357317102.

It is not an unprimeable number, because it can be changed into a prime (23847357317153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28988467 + ... + 29799763.

It is an arithmetic number, because the mean of its divisors is an integer number (938017879812).

Almost surely, 2^{23847357317155} is an apocalyptic number.

23847357317155 is a deficient number, since it is larger than the sum of its proper divisors (6169214836829).

23847357317155 is a wasteful number, since it uses less digits than its factorization.

23847357317155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812655.

The product of its digits is 74088000, while the sum is 61.

The spelling of 23847357317155 in words is "twenty-three trillion, eight hundred forty-seven billion, three hundred fifty-seven million, three hundred seventeen thousand, one hundred fifty-five".