68459261896 has 8 divisors (see below), whose sum is σ = 128361116070. Its totient is φ = 34229630944.

The previous prime is 68459261869. The next prime is 68459261903. The reversal of 68459261896 is 69816295486.

It can be written as a sum of positive squares in only one way, i.e., 42927696100 + 25531565796 = 207190^2 + 159786^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4278703861 + ... + 4278703876.

Almost surely, 2^68459261896 is an apocalyptic number.

It is an amenable number.

68459261896 is a deficient number, since it is larger than the sum of its proper divisors (59901854174).

68459261896 is a wasteful number, since it uses less digits than its factorization.

68459261896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8557407743 (or 8557407739 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 64.

The spelling of 68459261896 in words is "sixty-eight billion, four hundred fifty-nine million, two hundred sixty-one thousand, eight hundred ninety-six".