2506733643 has 4 divisors (see below), whose sum is σ = 3342311528. Its totient is φ = 1671155760.

The previous prime is 2506733569. The next prime is 2506733653. The reversal of 2506733643 is 3463376052.

It is a happy number.

2506733643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2506733643 - 2¹³ = 2506725451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2506733653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417788938 + ... + 417788943.

It is an arithmetic number, because the mean of its divisors is an integer number (835577882).

Almost surely, 2^2506733643 is an apocalyptic number.

2506733643 is a deficient number, since it is larger than the sum of its proper divisors (835577885).

2506733643 is an equidigital number, since it uses as much as digits as its factorization.

2506733643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835577884.

The product of its (nonzero) digits is 272160, while the sum is 39.

The square root of 2506733643 is about 50067.2911490126. The cubic root of 2506733643 is about 1358.4262438595.

The spelling of 2506733643 in words is "two billion, five hundred six million, seven hundred thirty-three thousand, six hundred forty-three".