21003040113415 has 32 divisors (see below), whose sum is σ = 27110666459520. Its totient is φ = 15579383238144.

The previous prime is 21003040113413. The next prime is 21003040113421. The reversal of 21003040113415 is 51431104030012.

It is a cyclic number.

It is not a de Polignac number, because 21003040113415 - 2¹ = 21003040113413 is a prime.

It is a super-2 number, since 2×21003040113415² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21003040113415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003040113413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8030284 + ... + 10319473.

It is an arithmetic number, because the mean of its divisors is an integer number (847208326860).

Almost surely, 2^{21003040113415} is an apocalyptic number.

21003040113415 is a deficient number, since it is larger than the sum of its proper divisors (6107626346105).

21003040113415 is a wasteful number, since it uses less digits than its factorization.

21003040113415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18350091.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 21003040113415 its reverse (51431104030012), we get a palindrome (72434144143427).

The spelling of 21003040113415 in words is "twenty-one trillion, three billion, forty million, one hundred thirteen thousand, four hundred fifteen".