20848170511 has 8 divisors (see below), whose sum is σ = 23828286464. Its totient is φ = 17868506040.

The previous prime is 20848170493. The next prime is 20848170583. The reversal of 20848170511 is 11507184802.

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

It is not a de Polignac number, because 20848170511 - 2²⁵ = 20814616079 is a prime.

It is a super-2 number, since 2×20848170511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20848170311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7335 + ... + 204328.

It is an arithmetic number, because the mean of its divisors is an integer number (2978535808).

Almost surely, 2^20848170511 is an apocalyptic number.

20848170511 is a deficient number, since it is larger than the sum of its proper divisors (2980115953).

20848170511 is a wasteful number, since it uses less digits than its factorization.

20848170511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225741.

The product of its (nonzero) digits is 17920, while the sum is 37.

The spelling of 20848170511 in words is "twenty billion, eight hundred forty-eight million, one hundred seventy thousand, five hundred eleven".