23403520157452 has 12 divisors (see below), whose sum is σ = 40963726572496. Its totient is φ = 11699598279600.

The previous prime is 23403520157449. The next prime is 23403520157453. The reversal of 23403520157452 is 25475102530432.

It is a super-2 number, since 2×23403520157452² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23403520157399 and 23403520157408.

It is not an unprimeable number, because it can be changed into a prime (23403520157453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540425424 + ... + 540468727.

Almost surely, 2^{23403520157452} is an apocalyptic number.

It is an amenable number.

23403520157452 is a deficient number, since it is larger than the sum of its proper divisors (17560206415044).

23403520157452 is a wasteful number, since it uses less digits than its factorization.

23403520157452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080899568 (or 1080899566 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 43.

Adding to 23403520157452 its reverse (25475102530432), we get a palindrome (48878622687884).

The spelling of 23403520157452 in words is "twenty-three trillion, four hundred three billion, five hundred twenty million, one hundred fifty-seven thousand, four hundred fifty-two".