23515784148 has 12 divisors (see below), whose sum is σ = 54870163040. Its totient is φ = 7838594712.

The previous prime is 23515784147. The next prime is 23515784153. The reversal of 23515784148 is 84148751532.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 23515784097 and 23515784106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23515784141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 979824328 + ... + 979824351.

Almost surely, 2^23515784148 is an apocalyptic number.

It is an amenable number.

23515784148 is an abundant number, since it is smaller than the sum of its proper divisors (31354378892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23515784148 is a wasteful number, since it uses less digits than its factorization.

23515784148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959648686 (or 1959648684 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The spelling of 23515784148 in words is "twenty-three billion, five hundred fifteen million, seven hundred eighty-four thousand, one hundred forty-eight".