2651380647 has 4 divisors (see below), whose sum is σ = 3535174200. Its totient is φ = 1767587096.

The previous prime is 2651380621. The next prime is 2651380663. The reversal of 2651380647 is 7460831562.

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 2651380647 - 2⁶ = 2651380583 is a prime.

It is a super-2 number, since 2×2651380647² = 14059638670572277218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2651380599 and 2651380608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651380687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441896772 + ... + 441896777.

It is an arithmetic number, because the mean of its divisors is an integer number (883793550).

Almost surely, 2^2651380647 is an apocalyptic number.

2651380647 is a deficient number, since it is larger than the sum of its proper divisors (883793553).

2651380647 is an equidigital number, since it uses as much as digits as its factorization.

2651380647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883793552.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 2651380647 is about 51491.5589878574. The cubic root of 2651380647 is about 1384.0677861079.

The spelling of 2651380647 in words is "two billion, six hundred fifty-one million, three hundred eighty thousand, six hundred forty-seven".