20968767548 has 12 divisors (see below), whose sum is σ = 36752416680. Its totient is φ = 10468077072.

The previous prime is 20968767511. The next prime is 20968767559. The reversal of 20968767548 is 84576786902.

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, 4073783 + ... + 4078926.

It is an arithmetic number, because the mean of its divisors is an integer number (3062701390).

Almost surely, 2^20968767548 is an apocalyptic number.

It is an amenable number.

20968767548 is a deficient number, since it is larger than the sum of its proper divisors (15783649132).

20968767548 is a wasteful number, since it uses less digits than its factorization.

20968767548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8153356 (or 8153354 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 62.

The spelling of 20968767548 in words is "twenty billion, nine hundred sixty-eight million, seven hundred sixty-seven thousand, five hundred forty-eight".