20218117676 has 24 divisors (see below), whose sum is σ = 35668032960. Its totient is φ = 10027381392.

The previous prime is 20218117651. The next prime is 20218117709. The reversal of 20218117676 is 67671181202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630995 + ... + 662261.

It is an arithmetic number, because the mean of its divisors is an integer number (1486168040).

Almost surely, 2^20218117676 is an apocalyptic number.

It is an amenable number.

20218117676 is a deficient number, since it is larger than the sum of its proper divisors (15449915284).

20218117676 is a wasteful number, since it uses less digits than its factorization.

20218117676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32573 (or 32571 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 41.

Adding to 20218117676 its reverse (67671181202), we get a palindrome (87889298878).

The spelling of 20218117676 in words is "twenty billion, two hundred eighteen million, one hundred seventeen thousand, six hundred seventy-six".