64982746511 has 2 divisors, whose sum is σ = 64982746512. Its totient is φ = 64982746510.

The previous prime is 64982746501. The next prime is 64982746559. The reversal of 64982746511 is 11564728946.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64982746511 is a prime.

It is a super-2 number, since 2×64982746511² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64982746501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32491373255 + 32491373256.

It is an arithmetic number, because the mean of its divisors is an integer number (32491373256).

Almost surely, 2^64982746511 is an apocalyptic number.

64982746511 is a deficient number, since it is larger than the sum of its proper divisors (1).

64982746511 is an equidigital number, since it uses as much as digits as its factorization.

64982746511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The spelling of 64982746511 in words is "sixty-four billion, nine hundred eighty-two million, seven hundred forty-six thousand, five hundred eleven".