64540858068999 has 12 divisors (see below), whose sum is σ = 100396890329736. Its totient is φ = 39717451119312.

The previous prime is 64540858068979. The next prime is 64540858069001. The reversal of 64540858068999 is 99986085804546.

64540858068999 is a `hidden beast` number, since 6 + 4 + 540 + 8 + 5 + 8 + 0 + 68 + 9 + 9 + 9 = 666.

64540858068999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64540858068999 - 2¹⁵ = 64540858036231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64540858068919) 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 11 ways as a sum of consecutive naturals, for example, 275815632657 + ... + 275815632890.

It is an arithmetic number, because the mean of its divisors is an integer number (8366407527478).

Almost surely, 2^{64540858068999} is an apocalyptic number.

64540858068999 is a deficient number, since it is larger than the sum of its proper divisors (35856032260737).

64540858068999 is a wasteful number, since it uses less digits than its factorization.

64540858068999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551631265566 (or 551631265563 counting only the distinct ones).

The product of its (nonzero) digits is 5374771200, while the sum is 81.

The spelling of 64540858068999 in words is "sixty-four trillion, five hundred forty billion, eight hundred fifty-eight million, sixty-eight thousand, nine hundred ninety-nine".