20702166908 has 24 divisors (see below), whose sum is σ = 40378842000. Its totient is φ = 9229448448.

The previous prime is 20702166869. The next prime is 20702166943. The reversal of 20702166908 is 80966120702.

It is a super-3 number, since 3×20702166908³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8010383 + ... + 8012966.

It is an arithmetic number, because the mean of its divisors is an integer number (1682451750).

Almost surely, 2^20702166908 is an apocalyptic number.

It is an amenable number.

20702166908 is a deficient number, since it is larger than the sum of its proper divisors (19676675092).

20702166908 is a wasteful number, since it uses less digits than its factorization.

20702166908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16023389 (or 16023387 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 20702166908 in words is "twenty billion, seven hundred two million, one hundred sixty-six thousand, nine hundred eight".