20317755356 has 12 divisors (see below), whose sum is σ = 35579993568. Its totient is φ = 10152042912.

The previous prime is 20317755329. The next prime is 20317755361. The reversal of 20317755356 is 65355771302.

It is a super-2 number, since 2×20317755356² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702001 + ... + 1713896.

It is an arithmetic number, because the mean of its divisors is an integer number (2964999464).

Almost surely, 2^20317755356 is an apocalyptic number.

It is an amenable number.

20317755356 is a deficient number, since it is larger than the sum of its proper divisors (15262238212).

20317755356 is a wasteful number, since it uses less digits than its factorization.

20317755356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3417388 (or 3417386 counting only the distinct ones).

The product of its (nonzero) digits is 661500, while the sum is 44.

The spelling of 20317755356 in words is "twenty billion, three hundred seventeen million, seven hundred fifty-five thousand, three hundred fifty-six".