2651047647 has 4 divisors (see below), whose sum is σ = 3534730200. Its totient is φ = 1767365096.

The previous prime is 2651047601. The next prime is 2651047691. The reversal of 2651047647 is 7467401562.

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 2651047647 - 2⁸ = 2651047391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2651047599 and 2651047608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651047547) 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, 441841272 + ... + 441841277.

It is an arithmetic number, because the mean of its divisors is an integer number (883682550).

Almost surely, 2^2651047647 is an apocalyptic number.

2651047647 is a deficient number, since it is larger than the sum of its proper divisors (883682553).

2651047647 is an equidigital number, since it uses as much as digits as its factorization.

2651047647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883682552.

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 2651047647 is about 51488.3253466259. The cubic root of 2651047647 is about 1384.0098397106.

The spelling of 2651047647 in words is "two billion, six hundred fifty-one million, forty-seven thousand, six hundred forty-seven".