23515784147 has 2 divisors, whose sum is σ = 23515784148. Its totient is φ = 23515784146.

The previous prime is 23515784141. The next prime is 23515784153. The reversal of 23515784147 is 74148751532.

It is a balanced prime because it is at equal distance from previous prime (23515784141) and next prime (23515784153).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23515784147 is a prime.

It is not a weakly prime, because it can be changed into another prime (23515784141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11757892073 + 11757892074.

It is an arithmetic number, because the mean of its divisors is an integer number (11757892074).

Almost surely, 2^23515784147 is an apocalyptic number.

23515784147 is a deficient number, since it is larger than the sum of its proper divisors (1).

23515784147 is an equidigital number, since it uses as much as digits as its factorization.

23515784147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940800, while the sum is 47.

The spelling of 23515784147 in words is "twenty-three billion, five hundred fifteen million, seven hundred eighty-four thousand, one hundred forty-seven".