20641324532 has 12 divisors (see below), whose sum is σ = 37098597060. Its totient is φ = 10041725376.

The previous prime is 20641324453. The next prime is 20641324547. The reversal of 20641324532 is 23542314602.

It can be written as a sum of positive squares in 2 ways, for example, as 9473907556 + 11167416976 = 97334^2 + 105676^2 .

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 3 ways as a sum of consecutive naturals, for example, 69734057 + ... + 69734352.

It is an arithmetic number, because the mean of its divisors is an integer number (3091549755).

Almost surely, 2^20641324532 is an apocalyptic number.

It is an amenable number.

20641324532 is a deficient number, since it is larger than the sum of its proper divisors (16457272528).

20641324532 is a wasteful number, since it uses less digits than its factorization.

20641324532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139468450 (or 139468448 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The spelling of 20641324532 in words is "twenty billion, six hundred forty-one million, three hundred twenty-four thousand, five hundred thirty-two".