64213364661 has 8 divisors (see below), whose sum is σ = 85620715584. Its totient is φ = 42807461760.

The previous prime is 64213364659. The next prime is 64213364669. The reversal of 64213364661 is 16646331246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64213364661 - 2¹ = 64213364659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64213364669) 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 7 ways as a sum of consecutive naturals, for example, 253921 + ... + 439206.

It is an arithmetic number, because the mean of its divisors is an integer number (10702589448).

Almost surely, 2^64213364661 is an apocalyptic number.

It is an amenable number.

64213364661 is a deficient number, since it is larger than the sum of its proper divisors (21407350923).

64213364661 is a wasteful number, since it uses less digits than its factorization.

64213364661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724011.

The product of its digits is 373248, while the sum is 42.

The spelling of 64213364661 in words is "sixty-four billion, two hundred thirteen million, three hundred sixty-four thousand, six hundred sixty-one".