21514034245 has 16 divisors (see below), whose sum is σ = 28925013888. Its totient is φ = 15223688640.

The previous prime is 21514034219. The next prime is 21514034251. The reversal of 21514034245 is 54243041512.

It is not a de Polignac number, because 21514034245 - 2¹⁹ = 21513509957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5283969 + ... + 5288038.

It is an arithmetic number, because the mean of its divisors is an integer number (1807813368).

Almost surely, 2^21514034245 is an apocalyptic number.

It is an amenable number.

21514034245 is a deficient number, since it is larger than the sum of its proper divisors (7410979643).

21514034245 is a wasteful number, since it uses less digits than its factorization.

21514034245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10572060.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 21514034245 its reverse (54243041512), we get a palindrome (75757075757).

The spelling of 21514034245 in words is "twenty-one billion, five hundred fourteen million, thirty-four thousand, two hundred forty-five".