2547651679 has 2 divisors, whose sum is σ = 2547651680. Its totient is φ = 2547651678.

The previous prime is 2547651661. The next prime is 2547651697. The reversal of 2547651679 is 9761567452.

Together with next prime (2547651697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (2547651661) and next prime (2547651697).

It is a cyclic number.

It is not a de Polignac number, because 2547651679 - 2¹³ = 2547643487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2547651179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1273825839 + 1273825840.

It is an arithmetic number, because the mean of its divisors is an integer number (1273825840).

Almost surely, 2^2547651679 is an apocalyptic number.

2547651679 is a deficient number, since it is larger than the sum of its proper divisors (1).

2547651679 is an equidigital number, since it uses as much as digits as its factorization.

2547651679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3175200, while the sum is 52.

The square root of 2547651679 is about 50474.2674934466. The cubic root of 2547651679 is about 1365.7776975975. Note that the first 3 decimals are identical.

The spelling of 2547651679 in words is "two billion, five hundred forty-seven million, six hundred fifty-one thousand, six hundred seventy-nine".