82155203830 has 32 divisors (see below), whose sum is σ = 169015636800. Its totient is φ = 28165724160.

The previous prime is 82155203807. The next prime is 82155203857. The reversal of 82155203830 is 3830255128.

It is a self number, because there is not a number n which added to its sum of digits gives 82155203830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1590246 + ... + 1641094.

It is an arithmetic number, because the mean of its divisors is an integer number (5281738650).

Almost surely, 2^82155203830 is an apocalyptic number.

82155203830 is an abundant number, since it is smaller than the sum of its proper divisors (86860432970).

82155203830 is a wasteful number, since it uses less digits than its factorization.

82155203830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73944.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 82155203830 its reverse (3830255128), we get a palindrome (85985458958).

The spelling of 82155203830 in words is "eighty-two billion, one hundred fifty-five million, two hundred three thousand, eight hundred thirty".