64529066863 has 4 divisors (see below), whose sum is σ = 67925333560. Its totient is φ = 61132800168.

The previous prime is 64529066827. The next prime is 64529066957. The reversal of 64529066863 is 36866092546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64529066863 - 2²¹ = 64526969711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64529066813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1698133320 + ... + 1698133357.

It is an arithmetic number, because the mean of its divisors is an integer number (16981333390).

Almost surely, 2^64529066863 is an apocalyptic number.

64529066863 is a deficient number, since it is larger than the sum of its proper divisors (3396266697).

64529066863 is a wasteful number, since it uses less digits than its factorization.

64529066863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396266696.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 64529066863 in words is "sixty-four billion, five hundred twenty-nine million, sixty-six thousand, eight hundred sixty-three".