27640287750 has 64 divisors (see below), whose sum is σ = 69013181952. Its totient is φ = 7368284000.

The previous prime is 27640287691. The next prime is 27640287751. The reversal of 27640287750 is 5778204672.

It is a self number, because there is not a number n which added to its sum of digits gives 27640287750.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27640287751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3874687 + ... + 3881813.

It is an arithmetic number, because the mean of its divisors is an integer number (1078330968).

Almost surely, 2^27640287750 is an apocalyptic number.

27640287750 is an abundant number, since it is smaller than the sum of its proper divisors (41372894202).

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

27640287750 is a wasteful number, since it uses less digits than its factorization.

27640287750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12318 (or 12308 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 27640287750 in words is "twenty-seven billion, six hundred forty million, two hundred eighty-seven thousand, seven hundred fifty".