68190791697 has 48 divisors (see below), whose sum is σ = 119980253952. Its totient is φ = 36431078400.

The previous prime is 68190791659. The next prime is 68190791749. The reversal of 68190791697 is 79619709186.

68190791697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 68190791697 - 2⁶ = 68190791633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (68190791657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49108 + ... + 372549.

It is an arithmetic number, because the mean of its divisors is an integer number (2499588624).

Almost surely, 2^68190791697 is an apocalyptic number.

It is an amenable number.

68190791697 is a deficient number, since it is larger than the sum of its proper divisors (51789462255).

68190791697 is a wasteful number, since it uses less digits than its factorization.

68190791697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421838 (or 421835 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 63.

The spelling of 68190791697 in words is "sixty-eight billion, one hundred ninety million, seven hundred ninety-one thousand, six hundred ninety-seven".