27811982990622 has 64 divisors (see below), whose sum is σ = 56088992526336. Its totient is φ = 9193505629440.

The previous prime is 27811982990593. The next prime is 27811982990629. The reversal of 27811982990622 is 22609928911872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27811982990629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 956940463 + ... + 956969525.

It is an arithmetic number, because the mean of its divisors is an integer number (876390508224).

Almost surely, 2^{27811982990622} is an apocalyptic number.

27811982990622 is an abundant number, since it is smaller than the sum of its proper divisors (28277009535714).

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

27811982990622 is a wasteful number, since it uses less digits than its factorization.

27811982990622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32025.

The product of its (nonzero) digits is 31352832, while the sum is 66.

The spelling of 27811982990622 in words is "twenty-seven trillion, eight hundred eleven billion, nine hundred eighty-two million, nine hundred ninety thousand, six hundred twenty-two".