68815534000 has 40 divisors (see below), whose sum is σ = 166395966048. Its totient is φ = 27526212800.

The previous prime is 68815533827. The next prime is 68815534027. The reversal of 68815534000 is 43551886.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17201884 + ... + 17205883.

Almost surely, 2^68815534000 is an apocalyptic number.

It is an amenable number.

68815534000 is an abundant number, since it is smaller than the sum of its proper divisors (97580432048).

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

68815534000 is a wasteful number, since it uses less digits than its factorization.

68815534000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34407790 (or 34407774 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 68815534000 in words is "sixty-eight billion, eight hundred fifteen million, five hundred thirty-four thousand".