773538921956 has 12 divisors (see below), whose sum is σ = 1353770957868. Its totient is φ = 386747219712.

The previous prime is 773538921877. The next prime is 773538921973. The reversal of 773538921956 is 659129835377.

It can be written as a sum of positive squares in 2 ways, for example, as 449994105856 + 323544816100 = 670816^2 + 568810^2 .

It is a junction number, because it is equal to n+sod(n) for n = 773538921892 and 773538921901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5481941 + ... + 5621276.

It is an arithmetic number, because the mean of its divisors is an integer number (112814246489).

Almost surely, 2^773538921956 is an apocalyptic number.

It is an amenable number.

773538921956 is a deficient number, since it is larger than the sum of its proper divisors (580232035912).

773538921956 is a wasteful number, since it uses less digits than its factorization.

773538921956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11120638 (or 11120636 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 65.

The spelling of 773538921956 in words is "seven hundred seventy-three billion, five hundred thirty-eight million, nine hundred twenty-one thousand, nine hundred fifty-six".