20968353580 has 12 divisors (see below), whose sum is σ = 44033542560. Its totient is φ = 8387341424.

The previous prime is 20968353559. The next prime is 20968353587. The reversal of 20968353580 is 8535386902.

It is not an unprimeable number, because it can be changed into a prime (20968353587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524208820 + ... + 524208859.

It is an arithmetic number, because the mean of its divisors is an integer number (3669461880).

Almost surely, 2^20968353580 is an apocalyptic number.

20968353580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20968353580 is an abundant number, since it is smaller than the sum of its proper divisors (23065188980).

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

20968353580 is a wasteful number, since it uses less digits than its factorization.

20968353580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048417688 (or 1048417686 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 20968353580 in words is "twenty billion, nine hundred sixty-eight million, three hundred fifty-three thousand, five hundred eighty".