821000036364 has 24 divisors (see below), whose sum is σ = 1967441529648. Its totient is φ = 266270281920.

The previous prime is 821000036341. The next prime is 821000036369. The reversal of 821000036364 is 463630000128.

It is not an unprimeable number, because it can be changed into a prime (821000036369) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 924549147 + ... + 924550034.

It is an arithmetic number, because the mean of its divisors is an integer number (81976730402).

Almost surely, 2^821000036364 is an apocalyptic number.

It is an amenable number.

821000036364 is an abundant number, since it is smaller than the sum of its proper divisors (1146441493284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

821000036364 is a wasteful number, since it uses less digits than its factorization.

821000036364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849099225 (or 1849099223 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 821000036364 in words is "eight hundred twenty-one billion, thirty-six thousand, three hundred sixty-four".