23573840634 has 24 divisors (see below), whose sum is σ = 51723197760. Its totient is φ = 7758478728.

The previous prime is 23573840629. The next prime is 23573840651. The reversal of 23573840634 is 43604837532.

23573840634 is a `hidden beast` number, since 2 + 3 + 5 + 7 + 3 + 8 + 4 + 0 + 634 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 23573840634.

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 in 11 ways as a sum of consecutive naturals, for example, 8287552 + ... + 8290395.

It is an arithmetic number, because the mean of its divisors is an integer number (2155133240).

Almost surely, 2^23573840634 is an apocalyptic number.

23573840634 is an abundant number, since it is smaller than the sum of its proper divisors (28149357126).

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

23573840634 is a wasteful number, since it uses less digits than its factorization.

23573840634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16578034 (or 16578031 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

The spelling of 23573840634 in words is "twenty-three billion, five hundred seventy-three million, eight hundred forty thousand, six hundred thirty-four".