27641637012 has 24 divisors (see below), whose sum is σ = 70360530912. Its totient is φ = 8376253600.

The previous prime is 27641637011. The next prime is 27641637017. The reversal of 27641637012 is 21073614672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27641637011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104703039 + ... + 104703302.

It is an arithmetic number, because the mean of its divisors is an integer number (2931688788).

Almost surely, 2^27641637012 is an apocalyptic number.

27641637012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27641637012 is an abundant number, since it is smaller than the sum of its proper divisors (42718893900).

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

27641637012 is a wasteful number, since it uses less digits than its factorization.

27641637012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209406359 (or 209406357 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 27641637012 in words is "twenty-seven billion, six hundred forty-one million, six hundred thirty-seven thousand, twelve".