27790982982 has 256 divisors, whose sum is σ = 76953600000. Its totient is φ = 7414727040.

The previous prime is 27790982977. The next prime is 27790982993. The reversal of 27790982982 is 28928909772.

It is a super-2 number, since 2×27790982982² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 16650444 + ... + 16652112.

It is an arithmetic number, because the mean of its divisors is an integer number (300600000).

Almost surely, 2^27790982982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27790982982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38476800000).

27790982982 is an abundant number, since it is smaller than the sum of its proper divisors (49162617018).

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

27790982982 is a wasteful number, since it uses less digits than its factorization.

27790982982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761 (or 1741 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 27790982982 in words is "twenty-seven billion, seven hundred ninety million, nine hundred eighty-two thousand, nine hundred eighty-two".