20858594629 has 8 divisors (see below), whose sum is σ = 21331455192. Its totient is φ = 20390791680.

The previous prime is 20858594593. The next prime is 20858594641. The reversal of 20858594629 is 92649585802.

It can be written as a sum of positive squares in 4 ways, for example, as 3480764004 + 17377830625 = 58998^2 + 131825^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20858594629 - 2³¹ = 18711110981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20858591629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1256062 + ... + 1272559.

It is an arithmetic number, because the mean of its divisors is an integer number (2666431899).

Almost surely, 2^20858594629 is an apocalyptic number.

It is an amenable number.

20858594629 is a deficient number, since it is larger than the sum of its proper divisors (472860563).

20858594629 is a wasteful number, since it uses less digits than its factorization.

20858594629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528807.

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 20858594629 in words is "twenty billion, eight hundred fifty-eight million, five hundred ninety-four thousand, six hundred twenty-nine".