27864460650 has 96 divisors (see below), whose sum is σ = 74565102528. Its totient is φ = 6845529600.

The previous prime is 27864460609. The next prime is 27864460661. The reversal of 27864460650 is 5606446872.

It is a self number, because there is not a number n which added to its sum of digits gives 27864460650.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1002237 + ... + 1029663.

It is an arithmetic number, because the mean of its divisors is an integer number (776719818).

Almost surely, 2^27864460650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27864460650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37282551264).

27864460650 is an abundant number, since it is smaller than the sum of its proper divisors (46700641878).

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

27864460650 is a wasteful number, since it uses less digits than its factorization.

27864460650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27976 (or 27971 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 27864460650 in words is "twenty-seven billion, eight hundred sixty-four million, four hundred sixty thousand, six hundred fifty".