20968353544 has 64 divisors (see below), whose sum is σ = 40343846400. Its totient is φ = 10214740224.

The previous prime is 20968353529. The next prime is 20968353551. The reversal of 20968353544 is 44535386902.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14100369 + ... + 14101855.

It is an arithmetic number, because the mean of its divisors is an integer number (630372600).

Almost surely, 2^20968353544 is an apocalyptic number.

It is an amenable number.

20968353544 is a deficient number, since it is larger than the sum of its proper divisors (19375492856).

20968353544 is a wasteful number, since it uses less digits than its factorization.

20968353544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862 (or 1858 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 20968353544 in words is "twenty billion, nine hundred sixty-eight million, three hundred fifty-three thousand, five hundred forty-four".