2665073664 has 440 divisors, whose sum is σ = 9130733568. Its totient is φ = 766402560.

The previous prime is 2665073617. The next prime is 2665073681. The reversal of 2665073664 is 4663705662.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20984769 + ... + 20984895.

Almost surely, 2^2665073664 is an apocalyptic number.

2665073664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665073664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4565366784).

2665073664 is an abundant number, since it is smaller than the sum of its proper divisors (6465659904).

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

2665073664 is a wasteful number, since it uses less digits than its factorization.

2665073664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The square root of 2665073664 is about 51624.3514632387. The cubic root of 2665073664 is about 1386.4463621085.

The spelling of 2665073664 in words is "two billion, six hundred sixty-five million, seventy-three thousand, six hundred sixty-four".