68556028992 has 84 divisors (see below), whose sum is σ = 199376769648. Its totient is φ = 20774547200.

The previous prime is 68556028963. The next prime is 68556029011. The reversal of 68556028992 is 29982065586.

It is a super-2 number, since 2×68556028992² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1452234 + ... + 1498697.

It is an arithmetic number, because the mean of its divisors is an integer number (2373532972).

Almost surely, 2^68556028992 is an apocalyptic number.

It is an amenable number.

68556028992 is an abundant number, since it is smaller than the sum of its proper divisors (130820740656).

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

68556028992 is a wasteful number, since it uses less digits than its factorization.

68556028992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950968 (or 2950947 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 68556028992 in words is "sixty-eight billion, five hundred fifty-six million, twenty-eight thousand, nine hundred ninety-two".