21350041315 has 16 divisors (see below), whose sum is σ = 27626245920. Its totient is φ = 15786420480.

The previous prime is 21350041301. The next prime is 21350041333. The reversal of 21350041315 is 51314005312.

It is a happy number.

It is not a de Polignac number, because 21350041315 - 2¹¹ = 21350039267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21350041315.

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, 2736804 + ... + 2744593.

It is an arithmetic number, because the mean of its divisors is an integer number (1726640370).

Almost surely, 2^21350041315 is an apocalyptic number.

21350041315 is a deficient number, since it is larger than the sum of its proper divisors (6276204605).

21350041315 is a wasteful number, since it uses less digits than its factorization.

21350041315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481462.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 21350041315 its reverse (51314005312), we get a palindrome (72664046627).

The spelling of 21350041315 in words is "twenty-one billion, three hundred fifty million, forty-one thousand, three hundred fifteen".