820292813672 has 32 divisors (see below), whose sum is σ = 1547956206720. Its totient is φ = 407506706880.

The previous prime is 820292813671. The next prime is 820292813719. The reversal of 820292813672 is 276318292028.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 820292813672.

It is not an unprimeable number, because it can be changed into a prime (820292813671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2851397 + ... + 3125867.

It is an arithmetic number, because the mean of its divisors is an integer number (48373631460).

Almost surely, 2^820292813672 is an apocalyptic number.

It is an amenable number.

820292813672 is a deficient number, since it is larger than the sum of its proper divisors (727663393048).

820292813672 is a wasteful number, since it uses less digits than its factorization.

820292813672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276881 (or 276877 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 820292813672 in words is "eight hundred twenty billion, two hundred ninety-two million, eight hundred thirteen thousand, six hundred seventy-two".