68541920793 has 80 divisors (see below), whose sum is σ = 107138363904. Its totient is φ = 43619627520.

The previous prime is 68541920771. The next prime is 68541920813. The reversal of 68541920793 is 39702914586.

68541920793 is a `hidden beast` number, since 6 + 8 + 541 + 9 + 2 + 0 + 7 + 93 = 666.

It is not a de Polignac number, because 68541920793 - 2⁹ = 68541920281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68541922793) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 90543771 + ... + 90544527.

It is a 1-persistent number, because it is pandigital, but 2⋅68541920793 = 137083841586 is not.

Almost surely, 2^68541920793 is an apocalyptic number.

It is an amenable number.

68541920793 is a deficient number, since it is larger than the sum of its proper divisors (38596443111).

68541920793 is a wasteful number, since it uses less digits than its factorization.

68541920793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 68541920793 in words is "sixty-eight billion, five hundred forty-one million, nine hundred twenty thousand, seven hundred ninety-three".