23231855457 has 16 divisors (see below), whose sum is σ = 34648560000. Its totient is φ = 15383955312.

The previous prime is 23231855453. The next prime is 23231855473. The reversal of 23231855457 is 75455813232.

23231855457 is a `hidden beast` number, since 2 + 3 + 23 + 1 + 85 + 545 + 7 = 666.

It is not a de Polignac number, because 23231855457 - 2² = 23231855453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23231855453) 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, 2883357 + ... + 2891402.

It is an arithmetic number, because the mean of its divisors is an integer number (2165535000).

Almost surely, 2^23231855457 is an apocalyptic number.

23231855457 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

23231855457 is a deficient number, since it is larger than the sum of its proper divisors (11416704543).

23231855457 is a wasteful number, since it uses less digits than its factorization.

23231855457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5774917 (or 5774911 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The spelling of 23231855457 in words is "twenty-three billion, two hundred thirty-one million, eight hundred fifty-five thousand, four hundred fifty-seven".