23720285555 has 16 divisors (see below), whose sum is σ = 30142386144. Its totient is φ = 17857804800.

The previous prime is 23720285551. The next prime is 23720285573. The reversal of 23720285555 is 55558202732.

It is not a de Polignac number, because 23720285555 - 2² = 23720285551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23720285551) 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, 1170005 + ... + 1190105.

It is an arithmetic number, because the mean of its divisors is an integer number (1883899134).

Almost surely, 2^23720285555 is an apocalyptic number.

23720285555 is a deficient number, since it is larger than the sum of its proper divisors (6422100589).

23720285555 is a wasteful number, since it uses less digits than its factorization.

23720285555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34006.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 23720285555 in words is "twenty-three billion, seven hundred twenty million, two hundred eighty-five thousand, five hundred fifty-five".