2643651010000 has 400 divisors, whose sum is σ = 8593769213568. Its totient is φ = 760608000000.

The previous prime is 2643651009949. The next prime is 2643651010027. The reversal of 2643651010000 is 101563462.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9877950 + ... + 10142050.

Almost surely, 2^{2643651010000} is an apocalyptic number.

2643651010000 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 2643651010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4296884606784).

2643651010000 is an abundant number, since it is smaller than the sum of its proper divisors (5950118203568).

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

2643651010000 is a wasteful number, since it uses less digits than its factorization.

2643651010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264160 (or 264139 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 2643651010000 its reverse (101563462), we get a palindrome (2643752573462).

The spelling of 2643651010000 in words is "two trillion, six hundred forty-three billion, six hundred fifty-one million, ten thousand".