27822781272 has 64 divisors (see below), whose sum is σ = 81717269760. Its totient is φ = 7782595200.

The previous prime is 27822781267. The next prime is 27822781277. The reversal of 27822781272 is 27218722872.

It is an interprime number because it is at equal distance from previous prime (27822781267) and next prime (27822781277).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27822781277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4050004 + ... + 4056867.

It is an arithmetic number, because the mean of its divisors is an integer number (1276832340).

Almost surely, 2^27822781272 is an apocalyptic number.

27822781272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27822781272 is an abundant number, since it is smaller than the sum of its proper divisors (53894488488).

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

27822781272 is a wasteful number, since it uses less digits than its factorization.

27822781272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8106904 (or 8106900 counting only the distinct ones).

The product of its digits is 702464, while the sum is 48.

The spelling of 27822781272 in words is "twenty-seven billion, eight hundred twenty-two million, seven hundred eighty-one thousand, two hundred seventy-two".