773583775745681 has 8 divisors (see below), whose sum is σ = 774412623224520. Its totient is φ = 772754935200768.

The previous prime is 773583775745617. The next prime is 773583775745701. The reversal of 773583775745681 is 186547577385377.

It can be written as a sum of positive squares in 4 ways, for example, as 92739596419600 + 680844179326081 = 9630140^2 + 26092991^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 773583775745681 - 2⁶ = 773583775745617 is a prime.

It is a super-2 number, since 2×773583775745681² (a number of 31 digits) contains 22 as substring.

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 773583775745681.

It is not an unprimeable number, because it can be changed into a prime (773583775745281) 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, 239482925 + ... + 242691653.

It is an arithmetic number, because the mean of its divisors is an integer number (96801577903065).

Almost surely, 2^{773583775745681} is an apocalyptic number.

It is an amenable number.

773583775745681 is a deficient number, since it is larger than the sum of its proper divisors (828847478839).

773583775745681 is a wasteful number, since it uses less digits than its factorization.

773583775745681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466963.

The product of its digits is 29042496000, while the sum is 83.

The spelling of 773583775745681 in words is "seven hundred seventy-three trillion, five hundred eighty-three billion, seven hundred seventy-five million, seven hundred forty-five thousand, six hundred eighty-one".