23540762640 has 80 divisors (see below), whose sum is σ = 75330464256. Its totient is φ = 6075033600.

The previous prime is 23540762603. The next prime is 23540762647. The reversal of 23540762640 is 4626704532.

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

It is not an unprimeable number, because it can be changed into a prime (23540762647) 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, 1574601 + ... + 1589480.

Almost surely, 2^23540762640 is an apocalyptic number.

23540762640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23540762640 is an abundant number, since it is smaller than the sum of its proper divisors (51789701616).

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

23540762640 is a wasteful number, since it uses less digits than its factorization.

23540762640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164128 (or 3164122 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 39.

The spelling of 23540762640 in words is "twenty-three billion, five hundred forty million, seven hundred sixty-two thousand, six hundred forty".