820122077162 has 4 divisors (see below), whose sum is σ = 1230183115746. Its totient is φ = 410061038580.

The previous prime is 820122077143. The next prime is 820122077189. The reversal of 820122077162 is 261770221028.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 759827765761 + 60294311401 = 871681^2 + 245549^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205030519289 + ... + 205030519292.

Almost surely, 2^820122077162 is an apocalyptic number.

820122077162 is a deficient number, since it is larger than the sum of its proper divisors (410061038584).

820122077162 is a wasteful number, since it uses less digits than its factorization.

820122077162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410061038583.

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 820122077162 in words is "eight hundred twenty billion, one hundred twenty-two million, seventy-seven thousand, one hundred sixty-two".