5866356332021 has 4 divisors (see below), whose sum is σ = 5866435812972. Its totient is φ = 5866276851072.

The previous prime is 5866356332009. The next prime is 5866356332027. The reversal of 5866356332021 is 1202336536685.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2842896115921 + 3023460216100 = 1686089^2 + 1738810^2 .

It is a cyclic number.

It is not a de Polignac number, because 5866356332021 - 2¹⁰ = 5866356330997 is a prime.

It is a super-2 number, since 2×5866356332021² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5866356332027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39629660 + ... + 39777413.

It is an arithmetic number, because the mean of its divisors is an integer number (1466608953243).

Almost surely, 2^{5866356332021} is an apocalyptic number.

It is an amenable number.

5866356332021 is a deficient number, since it is larger than the sum of its proper divisors (79480951).

5866356332021 is an equidigital number, since it uses as much as digits as its factorization.

5866356332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79480950.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 5866356332021 in words is "five trillion, eight hundred sixty-six billion, three hundred fifty-six million, three hundred thirty-two thousand, twenty-one".