820243130026 has 32 divisors (see below), whose sum is σ = 1301960880000. Its totient is φ = 386485178112.

The previous prime is 820243130023. The next prime is 820243130033. The reversal of 820243130026 is 620031342028.

It is a self number, because there is not a number n which added to its sum of digits gives 820243130026.

It is not an unprimeable number, because it can be changed into a prime (820243130023) 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, 35749230 + ... + 35772166.

It is an arithmetic number, because the mean of its divisors is an integer number (40686277500).

Almost surely, 2^820243130026 is an apocalyptic number.

820243130026 is a deficient number, since it is larger than the sum of its proper divisors (481717749974).

820243130026 is a wasteful number, since it uses less digits than its factorization.

820243130026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27886.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 820243130026 in words is "eight hundred twenty billion, two hundred forty-three million, one hundred thirty thousand, twenty-six".