27385378371 has 30 divisors (see below), whose sum is σ = 44297957220. Its totient is φ = 16852532112.

The previous prime is 27385378367. The next prime is 27385378379. The reversal of 27385378371 is 17387358372.

27385378371 is a `hidden beast` number, since 2 + 7 + 38 + 537 + 8 + 3 + 71 = 666.

It is not a de Polignac number, because 27385378371 - 2² = 27385378367 is a prime.

It is a super-2 number, since 2×27385378371² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27385378379) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 986581 + ... + 1013958.

It is an arithmetic number, because the mean of its divisors is an integer number (1476598574).

Almost surely, 2^27385378371 is an apocalyptic number.

27385378371 is a deficient number, since it is larger than the sum of its proper divisors (16912578849).

27385378371 is a wasteful number, since it uses less digits than its factorization.

27385378371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000577 (or 2000555 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 54.

The spelling of 27385378371 in words is "twenty-seven billion, three hundred eighty-five million, three hundred seventy-eight thousand, three hundred seventy-one".