68881541540 has 24 divisors (see below), whose sum is σ = 165315700032. Its totient is φ = 23616528480.

The previous prime is 68881541507. The next prime is 68881541549. The reversal of 68881541540 is 4514518886.

It is not an unprimeable number, because it can be changed into a prime (68881541549) 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, 246005366 + ... + 246005645.

It is an arithmetic number, because the mean of its divisors is an integer number (6888154168).

Almost surely, 2^68881541540 is an apocalyptic number.

It is an amenable number.

68881541540 is an abundant number, since it is smaller than the sum of its proper divisors (96434158492).

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

68881541540 is a wasteful number, since it uses less digits than its factorization.

68881541540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492011027 (or 492011025 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 50.

The spelling of 68881541540 in words is "sixty-eight billion, eight hundred eighty-one million, five hundred forty-one thousand, five hundred forty".