27773004402 has 72 divisors (see below), whose sum is σ = 71230560492. Its totient is φ = 7768664640.

The previous prime is 27773004383. The next prime is 27773004407. The reversal of 27773004402 is 20440037772.

It can be written as a sum of positive squares in 2 ways, for example, as 27410444721 + 362559681 = 165561^2 + 19041^2 .

It is a super-2 number, since 2×27773004402² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27773004407) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 462133 + ... + 518760.

Almost surely, 2^27773004402 is an apocalyptic number.

27773004402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27773004402 is an abundant number, since it is smaller than the sum of its proper divisors (43457556090).

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

27773004402 is a wasteful number, since it uses less digits than its factorization.

27773004402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980936 (or 980922 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 36.

The spelling of 27773004402 in words is "twenty-seven billion, seven hundred seventy-three million, four thousand, four hundred two".