64232856773 has 8 divisors (see below), whose sum is σ = 64409589720. Its totient is φ = 64056199680.

The previous prime is 64232856767. The next prime is 64232856827. The reversal of 64232856773 is 37765823246.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12968198884 + 51264657889 = 113878^2 + 226417^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64232856773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64232852773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1956413 + ... + 1988973.

It is an arithmetic number, because the mean of its divisors is an integer number (8051198715).

Almost surely, 2^64232856773 is an apocalyptic number.

It is an amenable number.

64232856773 is a deficient number, since it is larger than the sum of its proper divisors (176732947).

64232856773 is a wasteful number, since it uses less digits than its factorization.

64232856773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37927.

The product of its digits is 10160640, while the sum is 53.

The spelling of 64232856773 in words is "sixty-four billion, two hundred thirty-two million, eight hundred fifty-six thousand, seven hundred seventy-three".