21035314405 has 16 divisors (see below), whose sum is σ = 28853573760. Its totient is φ = 14421644352.

The previous prime is 21035314393. The next prime is 21035314451. The reversal of 21035314405 is 50441353012.

It is a cyclic number.

It is not a de Polignac number, because 21035314405 - 2⁷ = 21035314277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157267 + ... + 258463.

It is an arithmetic number, because the mean of its divisors is an integer number (1803348360).

Almost surely, 2^21035314405 is an apocalyptic number.

It is an amenable number.

21035314405 is a deficient number, since it is larger than the sum of its proper divisors (7818259355).

21035314405 is a wasteful number, since it uses less digits than its factorization.

21035314405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107148.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 21035314405 its reverse (50441353012), we get a palindrome (71476667417).

The spelling of 21035314405 in words is "twenty-one billion, thirty-five million, three hundred fourteen thousand, four hundred five".