20858326535 has 16 divisors (see below), whose sum is σ = 25747361472. Its totient is φ = 16209849600.

The previous prime is 20858326529. The next prime is 20858326547. The reversal of 20858326535 is 53562385802.

It is not a de Polignac number, because 20858326535 - 2¹⁰ = 20858325511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20858326535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27395 + ... + 206075.

It is an arithmetic number, because the mean of its divisors is an integer number (1609210092).

Almost surely, 2^20858326535 is an apocalyptic number.

20858326535 is a deficient number, since it is larger than the sum of its proper divisors (4889034937).

20858326535 is a wasteful number, since it uses less digits than its factorization.

20858326535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179354.

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 20858326535 in words is "twenty billion, eight hundred fifty-eight million, three hundred twenty-six thousand, five hundred thirty-five".