64235630593 has 4 divisors (see below), whose sum is σ = 64363336128. Its totient is φ = 64107925060.

The previous prime is 64235630587. The next prime is 64235630603. The reversal of 64235630593 is 39503653246.

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 a de Polignac number, because none of the positive numbers 2^k-64235630593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64235633593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63852013 + ... + 63853018.

It is an arithmetic number, because the mean of its divisors is an integer number (16090834032).

Almost surely, 2^64235630593 is an apocalyptic number.

It is an amenable number.

64235630593 is a deficient number, since it is larger than the sum of its proper divisors (127705535).

64235630593 is a wasteful number, since it uses less digits than its factorization.

64235630593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127705534.

The product of its (nonzero) digits is 1749600, while the sum is 46.

The spelling of 64235630593 in words is "sixty-four billion, two hundred thirty-five million, six hundred thirty thousand, five hundred ninety-three".