27122942784 has 56 divisors (see below), whose sum is σ = 82014616768. Its totient is φ = 7749411840.

The previous prime is 27122942767. The next prime is 27122942813. The reversal of 27122942784 is 48724922172.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10089037 + ... + 10091724.

It is an arithmetic number, because the mean of its divisors is an integer number (1464546728).

Almost surely, 2^27122942784 is an apocalyptic number.

27122942784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27122942784 is an abundant number, since it is smaller than the sum of its proper divisors (54891673984).

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

27122942784 is a wasteful number, since it uses less digits than its factorization.

27122942784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20180783 (or 20180773 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The spelling of 27122942784 in words is "twenty-seven billion, one hundred twenty-two million, nine hundred forty-two thousand, seven hundred eighty-four".