27931049285769 has 12 divisors (see below), whose sum is σ = 46108398821056. Its totient is φ = 15960599591832.

The previous prime is 27931049285759. The next prime is 27931049285779. The reversal of 27931049285769 is 96758294013972.

27931049285769 is a `hidden beast` number, since 2 + 7 + 9 + 3 + 1 + 0 + 49 + 2 + 8 + 576 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (27931049285759) and next prime (27931049285779).

It is not a de Polignac number, because 27931049285769 - 2⁷ = 27931049285641 is a prime.

It is a super-2 number, since 2×27931049285769² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27931049285697 and 27931049285706.

It is not an unprimeable number, because it can be changed into a prime (27931049285759) 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, 221674994269 + ... + 221674994394.

It is a 1-persistent number, because it is pandigital, but 2⋅27931049285769 = 55862098571538 is not.

Almost surely, 2^{27931049285769} is an apocalyptic number.

It is an amenable number.

27931049285769 is a deficient number, since it is larger than the sum of its proper divisors (18177349535287).

27931049285769 is a wasteful number, since it uses less digits than its factorization.

27931049285769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443349988676 (or 443349988673 counting only the distinct ones).

The product of its (nonzero) digits is 411505920, while the sum is 72.

The spelling of 27931049285769 in words is "twenty-seven trillion, nine hundred thirty-one billion, forty-nine million, two hundred eighty-five thousand, seven hundred sixty-nine".