68530186540 has 24 divisors (see below), whose sum is σ = 143953441632. Its totient is φ = 27404446080.

The previous prime is 68530186513. The next prime is 68530186547. The reversal of 68530186540 is 4568103586.

It is not an unprimeable number, because it can be changed into a prime (68530186547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402841 + ... + 547120.

It is an arithmetic number, because the mean of its divisors is an integer number (5998060068).

Almost surely, 2^68530186540 is an apocalyptic number.

It is an amenable number.

68530186540 is an abundant number, since it is smaller than the sum of its proper divisors (75423255092).

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

68530186540 is a wasteful number, since it uses less digits than its factorization.

68530186540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953577 (or 953575 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 68530186540 in words is "sixty-eight billion, five hundred thirty million, one hundred eighty-six thousand, five hundred forty".