27102691640 has 16 divisors (see below), whose sum is σ = 60981056280. Its totient is φ = 10841076640.

The previous prime is 27102691633. The next prime is 27102691661. The reversal of 27102691640 is 4619620172.

It is a junction number, because it is equal to n+sod(n) for n = 27102691594 and 27102691603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338783606 + ... + 338783685.

Almost surely, 2^27102691640 is an apocalyptic number.

27102691640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27102691640 is an abundant number, since it is smaller than the sum of its proper divisors (33878364640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27102691640 is a wasteful number, since it uses less digits than its factorization.

27102691640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677567302 (or 677567298 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 27102691640 in words is "twenty-seven billion, one hundred two million, six hundred ninety-one thousand, six hundred forty".