21514414025135 has 16 divisors (see below), whose sum is σ = 25847401003776. Its totient is φ = 17191468370688.

The previous prime is 21514414025087. The next prime is 21514414025233. The reversal of 21514414025135 is 53152041441512.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21514414025135 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25864937 + ... + 26683773.

It is an arithmetic number, because the mean of its divisors is an integer number (1615462562736).

Almost surely, 2^{21514414025135} is an apocalyptic number.

21514414025135 is a deficient number, since it is larger than the sum of its proper divisors (4332986978641).

21514414025135 is a wasteful number, since it uses less digits than its factorization.

21514414025135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824962.

The product of its (nonzero) digits is 96000, while the sum is 38.

Adding to 21514414025135 its reverse (53152041441512), we get a palindrome (74666455466647).

The spelling of 21514414025135 in words is "twenty-one trillion, five hundred fourteen billion, four hundred fourteen million, twenty-five thousand, one hundred thirty-five".