8266638255 has 16 divisors (see below), whose sum is σ = 13264746624. Its totient is φ = 4396165280.

The previous prime is 8266638251. The next prime is 8266638257. The reversal of 8266638255 is 5528366628.

It is not a de Polignac number, because 8266638255 - 2² = 8266638251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8266638198 and 8266638207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8266638251) 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, 788901 + ... + 799310.

It is an arithmetic number, because the mean of its divisors is an integer number (829046664).

Almost surely, 2^8266638255 is an apocalyptic number.

8266638255 is a deficient number, since it is larger than the sum of its proper divisors (4998108369).

8266638255 is a wasteful number, since it uses less digits than its factorization.

8266638255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588566.

The product of its digits is 4147200, while the sum is 51.

The square root of 8266638255 is about 90921.0550697692. The cubic root of 8266638255 is about 2021.9774654794.

The spelling of 8266638255 in words is "eight billion, two hundred sixty-six million, six hundred thirty-eight thousand, two hundred fifty-five".