23203315555 has 32 divisors (see below), whose sum is σ = 34410479616. Its totient is φ = 14656280064.

The previous prime is 23203315549. The next prime is 23203315559. The reversal of 23203315555 is 55551330232.

It is a cyclic number.

It is not a de Polignac number, because 23203315555 - 2³ = 23203315547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23203315555.

It is not an unprimeable number, because it can be changed into a prime (23203315559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386899 + ... + 442828.

It is an arithmetic number, because the mean of its divisors is an integer number (1075327488).

Almost surely, 2^23203315555 is an apocalyptic number.

23203315555 is a deficient number, since it is larger than the sum of its proper divisors (11207164061).

23203315555 is a wasteful number, since it uses less digits than its factorization.

23203315555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829803.

The product of its (nonzero) digits is 67500, while the sum is 34.

Adding to 23203315555 its reverse (55551330232), we get a palindrome (78754645787).

The spelling of 23203315555 in words is "twenty-three billion, two hundred three million, three hundred fifteen thousand, five hundred fifty-five".