23454296640 has 84 divisors (see below), whose sum is σ = 80673017724. Its totient is φ = 6254478336.

The previous prime is 23454296617. The next prime is 23454296641. The reversal of 23454296640 is 4669245432.

23454296640 is a `hidden beast` number, since 2 + 3 + 4 + 542 + 9 + 66 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13177203264 + 10277093376 = 114792^2 + 101376^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (23454296641) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4069047 + ... + 4074806.

Almost surely, 2^23454296640 is an apocalyptic number.

23454296640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23454296640 is an abundant number, since it is smaller than the sum of its proper divisors (57218721084).

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

23454296640 is a wasteful number, since it uses less digits than its factorization.

23454296640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8143876 (or 8143863 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 23454296640 in words is "twenty-three billion, four hundred fifty-four million, two hundred ninety-six thousand, six hundred forty".