23451402400 has 36 divisors (see below), whose sum is σ = 57250738062. Its totient is φ = 9380560640.

The previous prime is 23451402397. The next prime is 23451402413. The reversal of 23451402400 is 420415432.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18442726416 + 5008675984 = 135804^2 + 70772^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14656327 + ... + 14657926.

Almost surely, 2^23451402400 is an apocalyptic number.

23451402400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23451402400 is an abundant number, since it is smaller than the sum of its proper divisors (33799335662).

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

23451402400 is a wasteful number, since it uses less digits than its factorization.

23451402400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29314273 (or 29314260 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 23451402400 its reverse (420415432), we get a palindrome (23871817832).

The spelling of 23451402400 in words is "twenty-three billion, four hundred fifty-one million, four hundred two thousand, four hundred".