20466890353 has 16 divisors (see below), whose sum is σ = 25535095936. Its totient is φ = 15971748480.

The previous prime is 20466890351. The next prime is 20466890387. The reversal of 20466890353 is 35309866402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20466890353 - 2¹ = 20466890351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20466890351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1533843 + ... + 1547128.

It is an arithmetic number, because the mean of its divisors is an integer number (1595943496).

Almost surely, 2^20466890353 is an apocalyptic number.

It is an amenable number.

20466890353 is a deficient number, since it is larger than the sum of its proper divisors (5068205583).

20466890353 is a wasteful number, since it uses less digits than its factorization.

20466890353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081064.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 20466890353 in words is "twenty billion, four hundred sixty-six million, eight hundred ninety thousand, three hundred fifty-three".