2643961438832 has 80 divisors (see below), whose sum is σ = 6068418453504. Its totient is φ = 1092023424000.

The previous prime is 2643961438817. The next prime is 2643961438849. The reversal of 2643961438832 is 2388341693462.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743144 + ... + 2416647.

Almost surely, 2^{2643961438832} is an apocalyptic number.

It is an amenable number.

2643961438832 is an abundant number, since it is smaller than the sum of its proper divisors (3424457014672).

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

2643961438832 is a wasteful number, since it uses less digits than its factorization.

2643961438832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160078 (or 3160072 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 59.

The spelling of 2643961438832 in words is "two trillion, six hundred forty-three billion, nine hundred sixty-one million, four hundred thirty-eight thousand, eight hundred thirty-two".