64691726214 has 8 divisors (see below), whose sum is σ = 129383452440. Its totient is φ = 21563908736.

The previous prime is 64691726213. The next prime is 64691726279. The reversal of 64691726214 is 41262719646.

It is a happy number.

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

64691726214 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64691726213) 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, 5390977179 + ... + 5390977190.

It is an arithmetic number, because the mean of its divisors is an integer number (16172931555).

Almost surely, 2^64691726214 is an apocalyptic number.

64691726214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64691726214 is a wasteful number, since it uses less digits than its factorization.

64691726214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10781954374.

The product of its digits is 870912, while the sum is 48.

The spelling of 64691726214 in words is "sixty-four billion, six hundred ninety-one million, seven hundred twenty-six thousand, two hundred fourteen".