23178632648 has 8 divisors (see below), whose sum is σ = 43459936230. Its totient is φ = 11589316320.

The previous prime is 23178632639. The next prime is 23178632669. The reversal of 23178632648 is 84623687132.

It can be written as a sum of positive squares in only one way, i.e., 21072006244 + 2106626404 = 145162^2 + 45898^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×23178632648² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23178632596 and 23178632605.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1448664533 + ... + 1448664548.

Almost surely, 2^23178632648 is an apocalyptic number.

It is an amenable number.

23178632648 is a deficient number, since it is larger than the sum of its proper divisors (20281303582).

23178632648 is a wasteful number, since it uses less digits than its factorization.

23178632648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897329087 (or 2897329083 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 50.

The spelling of 23178632648 in words is "twenty-three billion, one hundred seventy-eight million, six hundred thirty-two thousand, six hundred forty-eight".