64492494587 has 2 divisors, whose sum is σ = 64492494588. Its totient is φ = 64492494586.

The previous prime is 64492494553. The next prime is 64492494607. The reversal of 64492494587 is 78549429446.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64492494587 is a prime.

It is not a weakly prime, because it can be changed into another prime (64492493587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32246247293 + 32246247294.

It is an arithmetic number, because the mean of its divisors is an integer number (32246247294).

Almost surely, 2^64492494587 is an apocalyptic number.

64492494587 is a deficient number, since it is larger than the sum of its proper divisors (1).

64492494587 is an equidigital number, since it uses as much as digits as its factorization.

64492494587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69672960, while the sum is 62.

The spelling of 64492494587 in words is "sixty-four billion, four hundred ninety-two million, four hundred ninety-four thousand, five hundred eighty-seven".