27773503656 has 32 divisors (see below), whose sum is σ = 69477332640. Its totient is φ = 9252024768.

The previous prime is 27773503643. The next prime is 27773503657. The reversal of 27773503656 is 65630537772.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27773503599 and 27773503608.

It is not an unprimeable number, because it can be changed into a prime (27773503657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323986 + ... + 400641.

It is an arithmetic number, because the mean of its divisors is an integer number (2171166645).

Almost surely, 2^27773503656 is an apocalyptic number.

It is an amenable number.

27773503656 is an abundant number, since it is smaller than the sum of its proper divisors (41703828984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27773503656 is a wasteful number, since it uses less digits than its factorization.

27773503656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726233 (or 726229 counting only the distinct ones).

The product of its (nonzero) digits is 5556600, while the sum is 51.

The spelling of 27773503656 in words is "twenty-seven billion, seven hundred seventy-three million, five hundred three thousand, six hundred fifty-six".