2668536081 has 12 divisors (see below), whose sum is σ = 3878201808. Its totient is φ = 1768108824.

The previous prime is 2668536067. The next prime is 2668536083. The reversal of 2668536081 is 1806358662.

It is not a de Polignac number, because 2668536081 - 2²³ = 2660147473 is a prime.

It is a super-2 number, since 2×2668536081² = 14242169631197677122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2668536083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 908055 + ... + 910988.

It is an arithmetic number, because the mean of its divisors is an integer number (323183484).

Almost surely, 2^2668536081 is an apocalyptic number.

It is an amenable number.

2668536081 is a deficient number, since it is larger than the sum of its proper divisors (1209665727).

2668536081 is a wasteful number, since it uses less digits than its factorization.

2668536081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819212 (or 1819209 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 2668536081 is about 51657.8753047394. The cubic root of 2668536081 is about 1387.0465178851.

The spelling of 2668536081 in words is "two billion, six hundred sixty-eight million, five hundred thirty-six thousand, eighty-one".