20446641582 has 8 divisors (see below), whose sum is σ = 40893283176. Its totient is φ = 6815547192.

The previous prime is 20446641577. The next prime is 20446641643. The reversal of 20446641582 is 28514664402.

It is a sphenic number, since it is the product of 3 distinct primes.

20446641582 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703886793 + ... + 1703886804.

It is an arithmetic number, because the mean of its divisors is an integer number (5111660397).

Almost surely, 2^20446641582 is an apocalyptic number.

20446641582 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20446641582 is a wasteful number, since it uses less digits than its factorization.

20446641582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3407773602.

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 20446641582 in words is "twenty billion, four hundred forty-six million, six hundred forty-one thousand, five hundred eighty-two".