20090818255 has 8 divisors (see below), whose sum is σ = 24138352224. Its totient is φ = 16053074400.

The previous prime is 20090818249. The next prime is 20090818261. The reversal of 20090818255 is 55281809002.

It is an interprime number because it is at equal distance from previous prime (20090818249) and next prime (20090818261).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20090818255 - 2⁹ = 20090817743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2443011 + ... + 2451220.

It is an arithmetic number, because the mean of its divisors is an integer number (3017294028).

Almost surely, 2^20090818255 is an apocalyptic number.

20090818255 is a deficient number, since it is larger than the sum of its proper divisors (4047533969).

20090818255 is an equidigital number, since it uses as much as digits as its factorization.

20090818255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895057.

The product of its (nonzero) digits is 57600, while the sum is 40.

The spelling of 20090818255 in words is "twenty billion, ninety million, eight hundred eighteen thousand, two hundred fifty-five".