20216064454 has 16 divisors (see below), whose sum is σ = 32425772256. Its totient is φ = 9419248000.

The previous prime is 20216064443. The next prime is 20216064469. The reversal of 20216064454 is 45446061202.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2940082 + ... + 2946949.

It is an arithmetic number, because the mean of its divisors is an integer number (2026610766).

Almost surely, 2^20216064454 is an apocalyptic number.

20216064454 is a deficient number, since it is larger than the sum of its proper divisors (12209707802).

20216064454 is a wasteful number, since it uses less digits than its factorization.

20216064454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5887151.

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 20216064454 in words is "twenty billion, two hundred sixteen million, sixty-four thousand, four hundred fifty-four".