2664026266420 has 12 divisors (see below), whose sum is σ = 5594455159524. Its totient is φ = 1065610506560.

The previous prime is 2664026266289. The next prime is 2664026266423. The reversal of 2664026266420 is 246626204662.

It can be written as a sum of positive squares in 2 ways, for example, as 688438597284 + 1975587669136 = 829722^2 + 1405556^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664026266423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66600656641 + ... + 66600656680.

It is an arithmetic number, because the mean of its divisors is an integer number (466204596627).

Almost surely, 2^{2664026266420} is an apocalyptic number.

2664026266420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2664026266420 is an abundant number, since it is smaller than the sum of its proper divisors (2930428893104).

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

2664026266420 is a wasteful number, since it uses less digits than its factorization.

2664026266420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133201313330 (or 133201313328 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 2664026266420 in words is "two trillion, six hundred sixty-four billion, twenty-six million, two hundred sixty-six thousand, four hundred twenty".