649425862087 has 2 divisors, whose sum is σ = 649425862088. Its totient is φ = 649425862086.

The previous prime is 649425861911. The next prime is 649425862097. The reversal of 649425862087 is 780268524946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 649425862087 - 2²⁷ = 649291644359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649425862097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324712931043 + 324712931044.

It is an arithmetic number, because the mean of its divisors is an integer number (324712931044).

Almost surely, 2^649425862087 is an apocalyptic number.

649425862087 is a deficient number, since it is larger than the sum of its proper divisors (1).

649425862087 is an equidigital number, since it uses as much as digits as its factorization.

649425862087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46448640, while the sum is 61.

The spelling of 649425862087 in words is "six hundred forty-nine billion, four hundred twenty-five million, eight hundred sixty-two thousand, eighty-seven".