21314061610465 has 32 divisors (see below), whose sum is σ = 27640395522432. Its totient is φ = 15684810624000.

The previous prime is 21314061610427. The next prime is 21314061610477. The reversal of 21314061610465 is 56401616041312.

It is not a de Polignac number, because 21314061610465 - 2¹¹ = 21314061608417 is a prime.

It is a Duffinian number.

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 31 ways as a sum of consecutive naturals, for example, 21570025 + ... + 22536505.

It is an arithmetic number, because the mean of its divisors is an integer number (863762360076).

Almost surely, 2^{21314061610465} is an apocalyptic number.

It is an amenable number.

21314061610465 is a deficient number, since it is larger than the sum of its proper divisors (6326333911967).

21314061610465 is a wasteful number, since it uses less digits than its factorization.

21314061610465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967681.

The product of its (nonzero) digits is 103680, while the sum is 40.

Adding to 21314061610465 its reverse (56401616041312), we get a palindrome (77715677651777).

The spelling of 21314061610465 in words is "twenty-one trillion, three hundred fourteen billion, sixty-one million, six hundred ten thousand, four hundred sixty-five".