27993300643 has 16 divisors (see below), whose sum is σ = 35012989440. Its totient is φ = 21742804800.

The previous prime is 27993300637. The next prime is 27993300661. The reversal of 27993300643 is 34600339972.

It is a cyclic number.

It is not a de Polignac number, because 27993300643 - 2⁵ = 27993300611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27993300593 and 27993300602.

It is not an unprimeable number, because it can be changed into a prime (27993300743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560538 + ... + 608431.

It is an arithmetic number, because the mean of its divisors is an integer number (2188311840).

Almost surely, 2^27993300643 is an apocalyptic number.

27993300643 is a deficient number, since it is larger than the sum of its proper divisors (7019688797).

27993300643 is a wasteful number, since it uses less digits than its factorization.

27993300643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169298.

The product of its (nonzero) digits is 734832, while the sum is 46.

The spelling of 27993300643 in words is "twenty-seven billion, nine hundred ninety-three million, three hundred thousand, six hundred forty-three".