2642665897920 has 112 divisors (see below), whose sum is σ = 8396088648480. Its totient is φ = 704238514176.

The previous prime is 2642665897901. The next prime is 2642665897943. The reversal of 2642665897920 is 297985662462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511386 + ... + 2355174.

Almost surely, 2^{2642665897920} is an apocalyptic number.

2642665897920 is a gapful number since it is divisible by the number (20) 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 2642665897920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4198044324240).

2642665897920 is an abundant number, since it is smaller than the sum of its proper divisors (5753422750560).

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

2642665897920 is a wasteful number, since it uses less digits than its factorization.

2642665897920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845302 (or 1845292 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 66.

The spelling of 2642665897920 in words is "two trillion, six hundred forty-two billion, six hundred sixty-five million, eight hundred ninety-seven thousand, nine hundred twenty".