2564231651 has 2 divisors, whose sum is σ = 2564231652. Its totient is φ = 2564231650.

The previous prime is 2564231633. The next prime is 2564231671. The reversal of 2564231651 is 1561324652.

2564231651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2564231651 - 2¹⁴ = 2564215267 is a prime.

It is not a weakly prime, because it can be changed into another prime (2564231611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282115825 + 1282115826.

It is an arithmetic number, because the mean of its divisors is an integer number (1282115826).

Almost surely, 2^2564231651 is an apocalyptic number.

2564231651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564231651 is an equidigital number, since it uses as much as digits as its factorization.

2564231651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 2564231651 is about 50638.2429691236. The cubic root of 2564231651 is about 1368.7340946394.

The spelling of 2564231651 in words is "two billion, five hundred sixty-four million, two hundred thirty-one thousand, six hundred fifty-one".