23020641840 has 80 divisors (see below), whose sum is σ = 81558851328. Its totient is φ = 5261860608.

The previous prime is 23020641799. The next prime is 23020641857. The reversal of 23020641840 is 4814602032.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23020641798 and 23020641807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6849702 + ... + 6853061.

Almost surely, 2^23020641840 is an apocalyptic number.

23020641840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23020641840 is an abundant number, since it is smaller than the sum of its proper divisors (58538209488).

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

23020641840 is a wasteful number, since it uses less digits than its factorization.

23020641840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13702786 (or 13702780 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 23020641840 in words is "twenty-three billion, twenty million, six hundred forty-one thousand, eight hundred forty".