20432541894 has 32 divisors (see below), whose sum is σ = 41991717600. Its totient is φ = 6623269632.

The previous prime is 20432541737. The next prime is 20432541911. The reversal of 20432541894 is 49814523402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 414682 + ... + 461330.

It is an arithmetic number, because the mean of its divisors is an integer number (1312241175).

Almost surely, 2^20432541894 is an apocalyptic number.

20432541894 is an abundant number, since it is smaller than the sum of its proper divisors (21559175706).

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

20432541894 is a wasteful number, since it uses less digits than its factorization.

20432541894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48664.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 20432541894 in words is "twenty billion, four hundred thirty-two million, five hundred forty-one thousand, eight hundred ninety-four".