2641665026 has 48 divisors (see below), whose sum is σ = 5349561408. Its totient is φ = 950040000.

The previous prime is 2641665011. The next prime is 2641665029. The reversal of 2641665026 is 6205661462.

It is not an unprimeable number, because it can be changed into a prime (2641665029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24725 + ... + 76776.

It is an arithmetic number, because the mean of its divisors is an integer number (111449196).

Almost surely, 2^2641665026 is an apocalyptic number.

2641665026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2641665026 is an abundant number, since it is smaller than the sum of its proper divisors (2707896382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2641665026 is a wasteful number, since it uses less digits than its factorization.

2641665026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101547 (or 101534 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 2641665026 is about 51397.1305230166. The cubic root of 2641665026 is about 1382.3751413627.

The spelling of 2641665026 in words is "two billion, six hundred forty-one million, six hundred sixty-five thousand, twenty-six".