64502695261449 has 135 divisors (see below), whose sum is σ = 103382108916471. Its totient is φ = 40073258887200.

The previous prime is 64502695261447. The next prime is 64502695261453. The reversal of 64502695261449 is 94416259620546.

The square root of 64502695261449 is 8031357.

It is a perfect power (a square), and thus also a powerful number.

64502695261449 is a `hidden beast` number, since 6 + 4 + 5 + 0 + 2 + 6 + 9 + 5 + 2 + 614 + 4 + 9 = 666.

64502695261449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 55629326669049 + 8873368592400 = 7458507^2 + 2978820^2 .

It is not a de Polignac number, because 64502695261449 - 2¹ = 64502695261447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64502695261447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 92015256799 + ... + 92015257499.

Almost surely, 2^{64502695261449} is an apocalyptic number.

64502695261449 is the 8031357-th square number.

64502695261449 is the 4015679-th centered octagonal number.

It is an amenable number.

64502695261449 is a deficient number, since it is larger than the sum of its proper divisors (38879413655022).

64502695261449 is an frugal number, since it uses more digits than its factorization.

64502695261449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 111974400, while the sum is 63.

The spelling of 64502695261449 in words is "sixty-four trillion, five hundred two billion, six hundred ninety-five million, two hundred sixty-one thousand, four hundred forty-nine".