64762626749 has 2 divisors, whose sum is σ = 64762626750. Its totient is φ = 64762626748.

The previous prime is 64762626737. The next prime is 64762626779. The reversal of 64762626749 is 94762626746.

64762626749 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 can be written as a sum of positive squares in only one way, i.e., 35661678649 + 29100948100 = 188843^2 + 170590^2 .

It is a cyclic number.

It is not a de Polignac number, because 64762626749 - 2³² = 60467659453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64762626779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32381313374 + 32381313375.

It is an arithmetic number, because the mean of its divisors is an integer number (32381313375).

Almost surely, 2^64762626749 is an apocalyptic number.

It is an amenable number.

64762626749 is a deficient number, since it is larger than the sum of its proper divisors (1).

64762626749 is an equidigital number, since it uses as much as digits as its factorization.

64762626749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36578304, while the sum is 59.

The spelling of 64762626749 in words is "sixty-four billion, seven hundred sixty-two million, six hundred twenty-six thousand, seven hundred forty-nine".