68889403488 has 96 divisors (see below), whose sum is σ = 195204038400. Its totient is φ = 21207312896.

The previous prime is 68889403469. The next prime is 68889403543. The reversal of 68889403488 is 88430498886.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×68889403488² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473898 + ... + 601961.

It is an arithmetic number, because the mean of its divisors is an integer number (2033375400).

Almost surely, 2^68889403488 is an apocalyptic number.

It is an amenable number.

68889403488 is an abundant number, since it is smaller than the sum of its proper divisors (126314634912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68889403488 is a wasteful number, since it uses less digits than its factorization.

68889403488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075924 (or 1075916 counting only the distinct ones).

The product of its (nonzero) digits is 84934656, while the sum is 66.

The spelling of 68889403488 in words is "sixty-eight billion, eight hundred eighty-nine million, four hundred three thousand, four hundred eighty-eight".