81824045356 has 12 divisors (see below), whose sum is σ = 143200811880. Its totient is φ = 40909527680.

The previous prime is 81824045341. The next prime is 81824045371. The reversal of 81824045356 is 65354042818.

It is an interprime number because it is at equal distance from previous prime (81824045341) and next prime (81824045371).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548965 + ... + 681916.

It is an arithmetic number, because the mean of its divisors is an integer number (11933400990).

Almost surely, 2^81824045356 is an apocalyptic number.

It is an amenable number.

81824045356 is a deficient number, since it is larger than the sum of its proper divisors (61376766524).

81824045356 is a wasteful number, since it uses less digits than its factorization.

81824045356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247504 (or 1247502 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 81824045356 in words is "eighty-one billion, eight hundred twenty-four million, forty-five thousand, three hundred fifty-six".