820153804287 has 16 divisors (see below), whose sum is σ = 1097963379072. Its totient is φ = 544556988000.

The previous prime is 820153804271. The next prime is 820153804367. The reversal of 820153804287 is 782408351028.

It is not a de Polignac number, because 820153804287 - 2⁴ = 820153804271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820153804207) 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, 19796008 + ... + 19837394.

It is an arithmetic number, because the mean of its divisors is an integer number (68622711192).

Almost surely, 2^820153804287 is an apocalyptic number.

820153804287 is a deficient number, since it is larger than the sum of its proper divisors (277809574785).

820153804287 is a wasteful number, since it uses less digits than its factorization.

820153804287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67958.

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 820153804287 in words is "eight hundred twenty billion, one hundred fifty-three million, eight hundred four thousand, two hundred eighty-seven".