21514050004405 has 64 divisors (see below), whose sum is σ = 29989466496000. Its totient is φ = 14512285347840.

The previous prime is 21514050004387. The next prime is 21514050004441. The reversal of 21514050004405 is 50440005041512.

It is a happy number.

It is not a de Polignac number, because 21514050004405 - 2¹⁷ = 21514049873333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1422785245 + ... + 1422800365.

It is an arithmetic number, because the mean of its divisors is an integer number (468585414000).

Almost surely, 2^{21514050004405} is an apocalyptic number.

It is an amenable number.

21514050004405 is a deficient number, since it is larger than the sum of its proper divisors (8475416491595).

21514050004405 is a wasteful number, since it uses less digits than its factorization.

21514050004405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17894.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 21514050004405 its reverse (50440005041512), we get a palindrome (71954055045917).

The spelling of 21514050004405 in words is "twenty-one trillion, five hundred fourteen billion, fifty million, four thousand, four hundred five".