20858565334 has 8 divisors (see below), whose sum is σ = 31800763728. Its totient is φ = 10258310760.

The previous prime is 20858565281. The next prime is 20858565337. The reversal of 20858565334 is 43356585802.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20858565337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85485802 + ... + 85486045.

It is an arithmetic number, because the mean of its divisors is an integer number (3975095466).

Almost surely, 2^20858565334 is an apocalyptic number.

20858565334 is a deficient number, since it is larger than the sum of its proper divisors (10942198394).

20858565334 is a wasteful number, since it uses less digits than its factorization.

20858565334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170971910.

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 20858565334 in words is "twenty billion, eight hundred fifty-eight million, five hundred sixty-five thousand, three hundred thirty-four".