21515454052314 has 16 divisors (see below), whose sum is σ = 43032939364128. Its totient is φ = 7171479474192.

The previous prime is 21515454052277. The next prime is 21515454052331. The reversal of 21515454052314 is 41325045451512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84498097 + ... + 84752340.

It is an arithmetic number, because the mean of its divisors is an integer number (2689558710258).

Almost surely, 2^{21515454052314} is an apocalyptic number.

21515454052314 is an abundant number, since it is smaller than the sum of its proper divisors (21517485311814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21515454052314 is a wasteful number, since it uses less digits than its factorization.

21515454052314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169271629.

The product of its (nonzero) digits is 480000, while the sum is 42.

The spelling of 21515454052314 in words is "twenty-one trillion, five hundred fifteen billion, four hundred fifty-four million, fifty-two thousand, three hundred fourteen".