21036586379 has 8 divisors (see below), whose sum is σ = 21388603392. Its totient is φ = 20686117480.

The previous prime is 21036586357. The next prime is 21036586423. The reversal of 21036586379 is 97368563012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21036586379 is a prime.

It is a super-2 number, since 2×21036586379² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21036586279) 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, 359609 + ... + 413994.

It is an arithmetic number, because the mean of its divisors is an integer number (2673575424).

Almost surely, 2^21036586379 is an apocalyptic number.

21036586379 is a deficient number, since it is larger than the sum of its proper divisors (352017013).

21036586379 is an equidigital number, since it uses as much as digits as its factorization.

21036586379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774057.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 21036586379 in words is "twenty-one billion, thirty-six million, five hundred eighty-six thousand, three hundred seventy-nine".