2643652433620 has 144 divisors (see below), whose sum is σ = 6211549774080. Its totient is φ = 944243618560.

The previous prime is 2643652433581. The next prime is 2643652433621. The reversal of 2643652433620 is 263342563462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643652433621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34710741 + ... + 34786819.

It is an arithmetic number, because the mean of its divisors is an integer number (43135762320).

Almost surely, 2^{2643652433620} is an apocalyptic number.

2643652433620 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 2643652433620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3105774887040).

2643652433620 is an abundant number, since it is smaller than the sum of its proper divisors (3567897340460).

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

2643652433620 is a wasteful number, since it uses less digits than its factorization.

2643652433620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76366 (or 76353 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 46.

The spelling of 2643652433620 in words is "two trillion, six hundred forty-three billion, six hundred fifty-two million, four hundred thirty-three thousand, six hundred twenty".