2526643644 has 96 divisors (see below), whose sum is σ = 6940684800. Its totient is φ = 715026816.

The previous prime is 2526643643. The next prime is 2526643673. The reversal of 2526643644 is 4463466252.

2526643644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2526643596 and 2526643605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2526643643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 437544 + ... + 443280.

It is an arithmetic number, because the mean of its divisors is an integer number (72298800).

Almost surely, 2^2526643644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2526643644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3470342400).

2526643644 is an abundant number, since it is smaller than the sum of its proper divisors (4414041156).

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

2526643644 is a wasteful number, since it uses less digits than its factorization.

2526643644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872 (or 5856 counting only the distinct ones).

The product of its digits is 829440, while the sum is 42.

The square root of 2526643644 is about 50265.7303140022. The cubic root of 2526643644 is about 1362.0132459182.

The spelling of 2526643644 in words is "two billion, five hundred twenty-six million, six hundred forty-three thousand, six hundred forty-four".