64489766011 has 4 divisors (see below), whose sum is σ = 70352472024. Its totient is φ = 58627060000.

The previous prime is 64489765997. The next prime is 64489766017. The reversal of 64489766011 is 11066798446.

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 64489766011 - 2⁷ = 64489765883 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 64489766011.

It is not an unprimeable number, because it can be changed into a prime (64489766017) 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, 2931352990 + ... + 2931353011.

It is an arithmetic number, because the mean of its divisors is an integer number (17588118006).

Almost surely, 2^64489766011 is an apocalyptic number.

64489766011 is a deficient number, since it is larger than the sum of its proper divisors (5862706013).

64489766011 is a wasteful number, since it uses less digits than its factorization.

64489766011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5862706012.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 64489766011 in words is "sixty-four billion, four hundred eighty-nine million, seven hundred sixty-six thousand, eleven".