23855111401 has 27 divisors (see below), whose sum is σ = 27711087453. Its totient is φ = 20517270840.

The previous prime is 23855111393. The next prime is 23855111447. The reversal of 23855111401 is 10411155832.

The square root of 23855111401 is 154451.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 23855111401 - 2³ = 23855111393 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (23855111101) 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 26 ways as a sum of consecutive naturals, for example, 32279890 + ... + 32280628.

Almost surely, 2^23855111401 is an apocalyptic number.

23855111401 is the 154451-st square number.

23855111401 is the 77226-th centered octagonal number.

It is an amenable number.

23855111401 is a deficient number, since it is larger than the sum of its proper divisors (3855976052).

23855111401 is an frugal number, since it uses more digits than its factorization.

23855111401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 23855111401 in words is "twenty-three billion, eight hundred fifty-five million, one hundred eleven thousand, four hundred one".