20205541458 has 12 divisors (see below), whose sum is σ = 43778673198. Its totient is φ = 6735180480.

The previous prime is 20205541457. The next prime is 20205541463. The reversal of 20205541458 is 85414550202.

20205541458 is a `hidden beast` number, since 20 + 20 + 554 + 14 + 58 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20202926769 + 2614689 = 142137^2 + 1617^2 .

It is a super-2 number, since 2×20205541458² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20205541457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561265023 + ... + 561265058.

Almost surely, 2^20205541458 is an apocalyptic number.

20205541458 is an abundant number, since it is smaller than the sum of its proper divisors (23573131740).

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

20205541458 is a wasteful number, since it uses less digits than its factorization.

20205541458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122530089 (or 1122530086 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The spelling of 20205541458 in words is "twenty billion, two hundred five million, five hundred forty-one thousand, four hundred fifty-eight".