64433634213 has 16 divisors (see below), whose sum is σ = 92544330816. Its totient is φ = 39641078400.

The previous prime is 64433634103. The next prime is 64433634229. The reversal of 64433634213 is 31243633446.

It is not a de Polignac number, because 64433634213 - 2¹⁶ = 64433568677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64433635213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64320 + ... + 364697.

It is an arithmetic number, because the mean of its divisors is an integer number (5784020676).

Almost surely, 2^64433634213 is an apocalyptic number.

It is an amenable number.

64433634213 is a deficient number, since it is larger than the sum of its proper divisors (28110696603).

64433634213 is a wasteful number, since it uses less digits than its factorization.

64433634213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432884.

The product of its digits is 373248, while the sum is 39.

The spelling of 64433634213 in words is "sixty-four billion, four hundred thirty-three million, six hundred thirty-four thousand, two hundred thirteen".