821000036365 has 8 divisors (see below), whose sum is σ = 1028034828288. Its totient is φ = 628243506000.

The previous prime is 821000036341. The next prime is 821000036369. The reversal of 821000036365 is 563630000128.

821000036365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 821000036365 - 2⁵ = 821000036333 is a prime.

It is a super-2 number, since 2×821000036365² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 821000036365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821000036369) 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, 3569565261 + ... + 3569565490.

It is an arithmetic number, because the mean of its divisors is an integer number (128504353536).

Almost surely, 2^821000036365 is an apocalyptic number.

It is an amenable number.

821000036365 is a deficient number, since it is larger than the sum of its proper divisors (207034791923).

821000036365 is a wasteful number, since it uses less digits than its factorization.

821000036365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7139130779.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 821000036365 in words is "eight hundred twenty-one billion, thirty-six thousand, three hundred sixty-five".