21514275115 has 32 divisors (see below), whose sum is σ = 28155574080. Its totient is φ = 15715713024.

The previous prime is 21514275103. The next prime is 21514275119. The reversal of 21514275115 is 51157241512.

It is a cyclic number.

It is not a de Polignac number, because 21514275115 - 2⁹ = 21514274603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21514275119) 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, 1100496 + ... + 1119874.

It is an arithmetic number, because the mean of its divisors is an integer number (879861690).

Almost surely, 2^21514275115 is an apocalyptic number.

21514275115 is a deficient number, since it is larger than the sum of its proper divisors (6641298965).

21514275115 is a wasteful number, since it uses less digits than its factorization.

21514275115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19791.

The product of its digits is 14000, while the sum is 34.

The spelling of 21514275115 in words is "twenty-one billion, five hundred fourteen million, two hundred seventy-five thousand, one hundred fifteen".