2641406653 has 4 divisors (see below), whose sum is σ = 2712796060. Its totient is φ = 2570017248.

The previous prime is 2641406611. The next prime is 2641406693. The reversal of 2641406653 is 3566041462.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2224348569 + 417058084 = 47163^2 + 20422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2641406653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 71389369 = 2641406653 / (2 + 6 + 4 + 1 + 4 + 0 + 6 + 6 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2641406693) 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, 35694648 + ... + 35694721.

It is an arithmetic number, because the mean of its divisors is an integer number (678199015).

Almost surely, 2^2641406653 is an apocalyptic number.

It is an amenable number.

2641406653 is a deficient number, since it is larger than the sum of its proper divisors (71389407).

2641406653 is an equidigital number, since it uses as much as digits as its factorization.

2641406653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71389406.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 2641406653 is about 51394.6169652037. The cubic root of 2641406653 is about 1382.3300712959.

The spelling of 2641406653 in words is "two billion, six hundred forty-one million, four hundred six thousand, six hundred fifty-three".