68428571497 has 32 divisors (see below), whose sum is σ = 84801024000. Its totient is φ = 54285733440.

The previous prime is 68428571467. The next prime is 68428571501. The reversal of 68428571497 is 79417582486.

It is a cyclic number.

It is not a de Polignac number, because 68428571497 - 2⁷ = 68428571369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68428571467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1275154 + ... + 1327732.

It is an arithmetic number, because the mean of its divisors is an integer number (2650032000).

Almost surely, 2^68428571497 is an apocalyptic number.

It is an amenable number.

68428571497 is a deficient number, since it is larger than the sum of its proper divisors (16372452503).

68428571497 is a wasteful number, since it uses less digits than its factorization.

68428571497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53101.

The product of its digits is 27095040, while the sum is 61.

The spelling of 68428571497 in words is "sixty-eight billion, four hundred twenty-eight million, five hundred seventy-one thousand, four hundred ninety-seven".