68547765042 has 96 divisors (see below), whose sum is σ = 153239074560. Its totient is φ = 22134228480.

The previous prime is 68547765029. The next prime is 68547765049. The reversal of 68547765042 is 24056774586.

It is a happy number.

68547765042 is a `hidden beast` number, since 6 + 8 + 547 + 7 + 6 + 50 + 42 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 68547765042.

It is not an unprimeable number, because it can be changed into a prime (68547765049) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67935834 + ... + 67936842.

It is an arithmetic number, because the mean of its divisors is an integer number (1596240360).

Almost surely, 2^68547765042 is an apocalyptic number.

68547765042 is an abundant number, since it is smaller than the sum of its proper divisors (84691309518).

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

68547765042 is a wasteful number, since it uses less digits than its factorization.

68547765042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808 (or 1805 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 54.

The spelling of 68547765042 in words is "sixty-eight billion, five hundred forty-seven million, seven hundred sixty-five thousand, forty-two".