64417230091 has 4 divisors (see below), whose sum is σ = 64428006384. Its totient is φ = 64406453800.

The previous prime is 64417230083. The next prime is 64417230107. The reversal of 64417230091 is 19003271446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64417230091 - 2³ = 64417230083 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 64417230091.

It is not an unprimeable number, because it can be changed into a prime (64417230391) 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, 5379175 + ... + 5391136.

It is an arithmetic number, because the mean of its divisors is an integer number (16107001596).

Almost surely, 2^64417230091 is an apocalyptic number.

64417230091 is a deficient number, since it is larger than the sum of its proper divisors (10776293).

64417230091 is a wasteful number, since it uses less digits than its factorization.

64417230091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10776292.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 64417230091 in words is "sixty-four billion, four hundred seventeen million, two hundred thirty thousand, ninety-one".