20450455335215 has 64 divisors (see below), whose sum is σ = 27865516631040. Its totient is φ = 14315186350080.

The previous prime is 20450455335157. The next prime is 20450455335223. The reversal of 20450455335215 is 51253355405402.

It is not a de Polignac number, because 20450455335215 - 2⁶ = 20450455335151 is a prime.

It is a super-2 number, since 2×20450455335215² (a number of 27 digits) contains 22 as substring.

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, 28098605 + ... + 28817225.

It is an arithmetic number, because the mean of its divisors is an integer number (435398697360).

Almost surely, 2^{20450455335215} is an apocalyptic number.

20450455335215 is a deficient number, since it is larger than the sum of its proper divisors (7415061295825).

20450455335215 is a wasteful number, since it uses less digits than its factorization.

20450455335215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718992.

The product of its (nonzero) digits is 1800000, while the sum is 44.

The spelling of 20450455335215 in words is "twenty trillion, four hundred fifty billion, four hundred fifty-five million, three hundred thirty-five thousand, two hundred fifteen".