20454428586 has 16 divisors (see below), whose sum is σ = 42687503424. Its totient is φ = 6521701824.

The previous prime is 20454428581. The next prime is 20454428597. The reversal of 20454428586 is 68582445402.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20454428581) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 74110111 + ... + 74110386.

It is an arithmetic number, because the mean of its divisors is an integer number (2667968964).

Almost surely, 2^20454428586 is an apocalyptic number.

20454428586 is an abundant number, since it is smaller than the sum of its proper divisors (22233074838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20454428586 is a wasteful number, since it uses less digits than its factorization.

20454428586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148220525.

The product of its (nonzero) digits is 2457600, while the sum is 48.

The spelling of 20454428586 in words is "twenty billion, four hundred fifty-four million, four hundred twenty-eight thousand, five hundred eighty-six".