68929392897 has 12 divisors (see below), whose sum is σ = 99712628964. Its totient is φ = 45884643840.

The previous prime is 68929392887. The next prime is 68929392949. The reversal of 68929392897 is 79829392986.

68929392897 is a `hidden beast` number, since 68 + 92 + 9 + 392 + 8 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17671980096 + 51257412801 = 132936^2 + 226401^2 .

It is not a de Polignac number, because 68929392897 - 2¹⁰ = 68929391873 is a prime.

It is a super-2 number, since 2×68929392897² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68929392827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5684004 + ... + 5696117.

It is an arithmetic number, because the mean of its divisors is an integer number (8309385747).

Almost surely, 2^68929392897 is an apocalyptic number.

It is an amenable number.

68929392897 is a deficient number, since it is larger than the sum of its proper divisors (30783236067).

68929392897 is a wasteful number, since it uses less digits than its factorization.

68929392897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11380800 (or 11380797 counting only the distinct ones).

The product of its digits is 211631616, while the sum is 72.

The spelling of 68929392897 in words is "sixty-eight billion, nine hundred twenty-nine million, three hundred ninety-two thousand, eight hundred ninety-seven".