27773321670 has 48 divisors (see below), whose sum is σ = 72226600992. Its totient is φ = 7404581760.

The previous prime is 27773321669. The next prime is 27773321671. The reversal of 27773321670 is 7612337772.

It is an interprime number because it is at equal distance from previous prime (27773321669) and next prime (27773321671).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27773321671) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 406714 + ... + 470066.

It is an arithmetic number, because the mean of its divisors is an integer number (1504720854).

Almost surely, 2^27773321670 is an apocalyptic number.

27773321670 is an abundant number, since it is smaller than the sum of its proper divisors (44453279322).

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

27773321670 is a wasteful number, since it uses less digits than its factorization.

27773321670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68237 (or 68234 counting only the distinct ones).

The product of its (nonzero) digits is 518616, while the sum is 45.

The spelling of 27773321670 in words is "twenty-seven billion, seven hundred seventy-three million, three hundred twenty-one thousand, six hundred seventy".