27783678372 has 48 divisors (see below), whose sum is σ = 66445157184. Its totient is φ = 9030528000.

The previous prime is 27783678361. The next prime is 27783678383. The reversal of 27783678372 is 27387638772.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27783678361) and next prime (27783678383).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 975372 + ... + 1003452.

It is an arithmetic number, because the mean of its divisors is an integer number (1384274108).

Almost surely, 2^27783678372 is an apocalyptic number.

It is an amenable number.

27783678372 is an abundant number, since it is smaller than the sum of its proper divisors (38661478812).

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

27783678372 is a wasteful number, since it uses less digits than its factorization.

27783678372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30140 (or 30138 counting only the distinct ones).

The product of its digits is 33191424, while the sum is 60.

The spelling of 27783678372 in words is "twenty-seven billion, seven hundred eighty-three million, six hundred seventy-eight thousand, three hundred seventy-two".