68581541842 has 12 divisors (see below), whose sum is σ = 113074525998. Its totient is φ = 31173428000.

The previous prime is 68581541807. The next prime is 68581541869. The reversal of 68581541842 is 24814518586.

It can be written as a sum of positive squares in only one way, i.e., 59467211881 + 9114329961 = 243859^2 + 95469^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68581541842.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141697159 + ... + 141697642.

Almost surely, 2^68581541842 is an apocalyptic number.

68581541842 is a deficient number, since it is larger than the sum of its proper divisors (44492984156).

68581541842 is a wasteful number, since it uses less digits than its factorization.

68581541842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283394825 (or 283394814 counting only the distinct ones).

The product of its digits is 2457600, while the sum is 52.

The spelling of 68581541842 in words is "sixty-eight billion, five hundred eighty-one million, five hundred forty-one thousand, eight hundred forty-two".