27664351450 has 24 divisors (see below), whose sum is σ = 51463287612. Its totient is φ = 11064107520.

The previous prime is 27664351427. The next prime is 27664351457. The reversal of 27664351450 is 5415346672.

It can be written as a sum of positive squares in 6 ways, for example, as 911496481 + 26752854969 = 30191^2 + 163563^2 .

It is a super-2 number, since 2×27664351450² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27664351397 and 27664351406.

It is not an unprimeable number, because it can be changed into a prime (27664351457) 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, 335752 + ... + 409948.

Almost surely, 2^27664351450 is an apocalyptic number.

27664351450 is a deficient number, since it is larger than the sum of its proper divisors (23798936162).

27664351450 is a wasteful number, since it uses less digits than its factorization.

27664351450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81666 (or 81661 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 27664351450 in words is "twenty-seven billion, six hundred sixty-four million, three hundred fifty-one thousand, four hundred fifty".