21514402235 has 8 divisors (see below), whose sum is σ = 25988258976. Its totient is φ = 17097537600.

The previous prime is 21514402219. The next prime is 21514402267. The reversal of 21514402235 is 53220441512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21514402235 - 2⁴ = 21514402219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21514402198 and 21514402207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14247194 + ... + 14248703.

It is an arithmetic number, because the mean of its divisors is an integer number (3248532372).

Almost surely, 2^21514402235 is an apocalyptic number.

21514402235 is a deficient number, since it is larger than the sum of its proper divisors (4473856741).

21514402235 is a wasteful number, since it uses less digits than its factorization.

21514402235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28496053.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 21514402235 its reverse (53220441512), we get a palindrome (74734843747).

The spelling of 21514402235 in words is "twenty-one billion, five hundred fourteen million, four hundred two thousand, two hundred thirty-five".