64772634722233 has 4 divisors (see below), whose sum is σ = 64848569816548. Its totient is φ = 64696699627920.

The previous prime is 64772634722137. The next prime is 64772634722303. The reversal of 64772634722233 is 33222743627746.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29400556483984 + 35372078238249 = 5422228^2 + 5947443^2 .

It is a cyclic number.

It is not a de Polignac number, because 64772634722233 - 2⁴⁵ = 29588262633401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64772634722533) 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, 37967545878 + ... + 37967547583.

It is an arithmetic number, because the mean of its divisors is an integer number (16212142454137).

Almost surely, 2^{64772634722233} is an apocalyptic number.

It is an amenable number.

64772634722233 is a deficient number, since it is larger than the sum of its proper divisors (75935094315).

64772634722233 is an equidigital number, since it uses as much as digits as its factorization.

64772634722233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75935094314.

The product of its digits is 85349376, while the sum is 58.

The spelling of 64772634722233 in words is "sixty-four trillion, seven hundred seventy-two billion, six hundred thirty-four million, seven hundred twenty-two thousand, two hundred thirty-three".