64363523533 has 4 divisors (see below), whose sum is σ = 64412921248. Its totient is φ = 64314125820.

The previous prime is 64363523527. The next prime is 64363523569. The reversal of 64363523533 is 33532536346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64363523533 - 2⁵ = 64363523501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64363523533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64363523573) 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, 24696903 + ... + 24699508.

It is an arithmetic number, because the mean of its divisors is an integer number (16103230312).

Almost surely, 2^64363523533 is an apocalyptic number.

It is an amenable number.

64363523533 is a deficient number, since it is larger than the sum of its proper divisors (49397715).

64363523533 is a wasteful number, since it uses less digits than its factorization.

64363523533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49397714.

The product of its digits is 1749600, while the sum is 43.

The spelling of 64363523533 in words is "sixty-four billion, three hundred sixty-three million, five hundred twenty-three thousand, five hundred thirty-three".