21032453415 has 16 divisors (see below), whose sum is σ = 33677431776. Its totient is φ = 11208806400.

The previous prime is 21032453341. The next prime is 21032453437. The reversal of 21032453415 is 51435423012.

It is not a de Polignac number, because 21032453415 - 2¹³ = 21032445223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510906 + ... + 550535.

It is an arithmetic number, because the mean of its divisors is an integer number (2104839486).

Almost surely, 2^21032453415 is an apocalyptic number.

21032453415 is a deficient number, since it is larger than the sum of its proper divisors (12644978361).

21032453415 is a wasteful number, since it uses less digits than its factorization.

21032453415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062770.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21032453415 its reverse (51435423012), we get a palindrome (72467876427).

The spelling of 21032453415 in words is "twenty-one billion, thirty-two million, four hundred fifty-three thousand, four hundred fifteen".