27748820799 has 24 divisors (see below), whose sum is σ = 45812387712. Its totient is φ = 15854803920.

The previous prime is 27748820791. The next prime is 27748820831. The reversal of 27748820799 is 99702884772.

It is not a de Polignac number, because 27748820799 - 2³ = 27748820791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27748820791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 828472 + ... + 861314.

It is an arithmetic number, because the mean of its divisors is an integer number (1908849488).

Almost surely, 2^27748820799 is an apocalyptic number.

27748820799 is a deficient number, since it is larger than the sum of its proper divisors (18063566913).

27748820799 is a wasteful number, since it uses less digits than its factorization.

27748820799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46267 (or 46264 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 27748820799 in words is "twenty-seven billion, seven hundred forty-eight million, eight hundred twenty thousand, seven hundred ninety-nine".