20948066680 has 32 divisors (see below), whose sum is σ = 47300909040. Its totient is φ = 8349402880.

The previous prime is 20948066651. The next prime is 20948066773. The reversal of 20948066680 is 8666084902.

It is a congruent number.

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, 920614 + ... + 943093.

Almost surely, 2^20948066680 is an apocalyptic number.

20948066680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20948066680 is an abundant number, since it is smaller than the sum of its proper divisors (26352842360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20948066680 is a wasteful number, since it uses less digits than its factorization.

20948066680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863999 (or 1863995 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 20948066680 in words is "twenty billion, nine hundred forty-eight million, sixty-six thousand, six hundred eighty".