23375378640 has 80 divisors (see below), whose sum is σ = 73830953088. Its totient is φ = 6115819008.

The previous prime is 23375378639. The next prime is 23375378647. The reversal of 23375378640 is 4687357332.

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 (48).

It is a self number, because there is not a number n which added to its sum of digits gives 23375378640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23375378647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906124 + ... + 931563.

Almost surely, 2^23375378640 is an apocalyptic number.

23375378640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23375378640 is an abundant number, since it is smaller than the sum of its proper divisors (50455574448).

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

23375378640 is a wasteful number, since it uses less digits than its factorization.

23375378640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837756 (or 1837750 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 23375378640 in words is "twenty-three billion, three hundred seventy-five million, three hundred seventy-eight thousand, six hundred forty".