23015300640 has 48 divisors (see below), whose sum is σ = 72498198528. Its totient is φ = 6137413376.

The previous prime is 23015300639. The next prime is 23015300669. The reversal of 23015300640 is 4600351032.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 23015300640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23973792 + ... + 23974751.

It is an arithmetic number, because the mean of its divisors is an integer number (1510379136).

Almost surely, 2^23015300640 is an apocalyptic number.

23015300640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23015300640 is an abundant number, since it is smaller than the sum of its proper divisors (49482897888).

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

23015300640 is a wasteful number, since it uses less digits than its factorization.

23015300640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47948561 (or 47948553 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 23015300640 its reverse (4600351032), we get a palindrome (27615651672).

The spelling of 23015300640 in words is "twenty-three billion, fifteen million, three hundred thousand, six hundred forty".