21038199536395 has 4 divisors (see below), whose sum is σ = 25245839443680. Its totient is φ = 16830559629112.

The previous prime is 21038199536369. The next prime is 21038199536413. The reversal of 21038199536395 is 59363599183012.

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

It is a cyclic number.

It is not a de Polignac number, because 21038199536395 - 2⁹ = 21038199535883 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2103819953635 + ... + 2103819953644.

It is an arithmetic number, because the mean of its divisors is an integer number (6311459860920).

Almost surely, 2^{21038199536395} is an apocalyptic number.

21038199536395 is a deficient number, since it is larger than the sum of its proper divisors (4207639907285).

21038199536395 is an equidigital number, since it uses as much as digits as its factorization.

21038199536395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207639907284.

The product of its (nonzero) digits is 47239200, while the sum is 64.

The spelling of 21038199536395 in words is "twenty-one trillion, thirty-eight billion, one hundred ninety-nine million, five hundred thirty-six thousand, three hundred ninety-five".