27664702443 has 32 divisors (see below), whose sum is σ = 46960243200. Its totient is φ = 15767720928.

The previous prime is 27664702423. The next prime is 27664702489. The reversal of 27664702443 is 34420746672.

It is not a de Polignac number, because 27664702443 - 2⁶ = 27664702379 is a prime.

It is a super-2 number, since 2×27664702443² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27664702423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114621 + ... + 261662.

It is an arithmetic number, because the mean of its divisors is an integer number (1467507600).

Almost surely, 2^27664702443 is an apocalyptic number.

27664702443 is a deficient number, since it is larger than the sum of its proper divisors (19295540757).

27664702443 is a wasteful number, since it uses less digits than its factorization.

27664702443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376688 (or 376682 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 45.

The spelling of 27664702443 in words is "twenty-seven billion, six hundred sixty-four million, seven hundred two thousand, four hundred forty-three".