81630096837 has 16 divisors (see below), whose sum is σ = 111166670592. Its totient is φ = 53257018880.

The previous prime is 81630096829. The next prime is 81630096841. The reversal of 81630096837 is 73869003618.

It is a cyclic number.

It is not a de Polignac number, because 81630096837 - 2³ = 81630096829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81630096837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81630096827) 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, 1893037 + ... + 1935677.

It is an arithmetic number, because the mean of its divisors is an integer number (6947916912).

Almost surely, 2^81630096837 is an apocalyptic number.

It is an amenable number.

81630096837 is a deficient number, since it is larger than the sum of its proper divisors (29536573755).

81630096837 is a wasteful number, since it uses less digits than its factorization.

81630096837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56268.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 81630096837 in words is "eighty-one billion, six hundred thirty million, ninety-six thousand, eight hundred thirty-seven".