27691903512 has 480 divisors, whose sum is σ = 98605029600. Its totient is φ = 7195474944.

The previous prime is 27691903501. The next prime is 27691903529. The reversal of 27691903512 is 21530919672.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 30132189 + ... + 30133107.

It is an arithmetic number, because the mean of its divisors is an integer number (205427145).

Almost surely, 2^27691903512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27691903512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49302514800).

27691903512 is an abundant number, since it is smaller than the sum of its proper divisors (70913126088).

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

27691903512 is a wasteful number, since it uses less digits than its factorization.

27691903512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1017 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 27691903512 in words is "twenty-seven billion, six hundred ninety-one million, nine hundred three thousand, five hundred twelve".