773378873377 has 12 divisors (see below), whose sum is σ = 879390629460. Its totient is φ = 678827848160.

The previous prime is 773378873369. The next prime is 773378873387.

773378873377 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 320536013281 + 452842860096 = 566159^2 + 672936^2 .

It is not a de Polignac number, because 773378873377 - 2³ = 773378873369 is a prime.

It is a super-2 number, since 2×773378873377² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (773378873347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110195818 + ... + 110202835.

It is an arithmetic number, because the mean of its divisors is an integer number (73282552455).

Almost surely, 2^773378873377 is an apocalyptic number.

It is an amenable number.

773378873377 is a deficient number, since it is larger than the sum of its proper divisors (106011756083).

773378873377 is a wasteful number, since it uses less digits than its factorization.

773378873377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220398704 (or 220398693 counting only the distinct ones).

The product of its digits is 609892416, while the sum is 70.

The spelling of 773378873377 in words is "seven hundred seventy-three billion, three hundred seventy-eight million, eight hundred seventy-three thousand, three hundred seventy-seven".