68744690140 has 36 divisors (see below), whose sum is σ = 167933459736. Its totient is φ = 23569607712.

The previous prime is 68744690051. The next prime is 68744690141. The reversal of 68744690140 is 4109644786.

It is a super-2 number, since 2×68744690140² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68744690141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35072842 + ... + 35074801.

It is an arithmetic number, because the mean of its divisors is an integer number (4664818326).

Almost surely, 2^68744690140 is an apocalyptic number.

It is an amenable number.

68744690140 is an abundant number, since it is smaller than the sum of its proper divisors (99188769596).

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

68744690140 is a wasteful number, since it uses less digits than its factorization.

68744690140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70147666 (or 70147657 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 68744690140 in words is "sixty-eight billion, seven hundred forty-four million, six hundred ninety thousand, one hundred forty".