27822319864 has 8 divisors (see below), whose sum is σ = 52166849760. Its totient is φ = 13911159928.

The previous prime is 27822319853. The next prime is 27822319879. The reversal of 27822319864 is 46891322872.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×27822319864² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1738894984 + ... + 1738894999.

It is an arithmetic number, because the mean of its divisors is an integer number (6520856220).

Almost surely, 2^27822319864 is an apocalyptic number.

It is an amenable number.

27822319864 is a deficient number, since it is larger than the sum of its proper divisors (24344529896).

27822319864 is a wasteful number, since it uses less digits than its factorization.

27822319864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3477789989 (or 3477789985 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The spelling of 27822319864 in words is "twenty-seven billion, eight hundred twenty-two million, three hundred nineteen thousand, eight hundred sixty-four".