2512136643 has 4 divisors (see below), whose sum is σ = 3349515528. Its totient is φ = 1674757760.

The previous prime is 2512136621. The next prime is 2512136729. The reversal of 2512136643 is 3466312152.

2512136643 is digitally balanced in base 2 and base 4, because in such bases 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 a cyclic number.

It is not a de Polignac number, because 2512136643 - 2⁵ = 2512136611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2512116643) 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, 418689438 + ... + 418689443.

It is an arithmetic number, because the mean of its divisors is an integer number (837378882).

Almost surely, 2^2512136643 is an apocalyptic number.

2512136643 is a deficient number, since it is larger than the sum of its proper divisors (837378885).

2512136643 is an equidigital number, since it uses as much as digits as its factorization.

2512136643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837378884.

The product of its digits is 25920, while the sum is 33.

The square root of 2512136643 is about 50121.2194883564. The cubic root of 2512136643 is about 1359.4015249912.

Adding to 2512136643 its reverse (3466312152), we get a palindrome (5978448795).

The spelling of 2512136643 in words is "two billion, five hundred twelve million, one hundred thirty-six thousand, six hundred forty-three".