68140740870 has 48 divisors (see below), whose sum is σ = 178155722160. Its totient is φ = 18069346752.

The previous prime is 68140740869. The next prime is 68140740881. The reversal of 68140740870 is 7804704186.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2098749 + ... + 2130968.

It is an arithmetic number, because the mean of its divisors is an integer number (3711577545).

Almost surely, 2^68140740870 is an apocalyptic number.

68140740870 is an abundant number, since it is smaller than the sum of its proper divisors (110014981290).

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

68140740870 is a wasteful number, since it uses less digits than its factorization.

68140740870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229909 (or 4229906 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 68140740870 in words is "sixty-eight billion, one hundred forty million, seven hundred forty thousand, eight hundred seventy".