68701331440 has 80 divisors (see below), whose sum is σ = 182703038400. Its totient is φ = 23534899200.

The previous prime is 68701331423. The next prime is 68701331449. The reversal of 68701331440 is 4413310786.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 68701331440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68701331449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 621486 + ... + 723634.

It is an arithmetic number, because the mean of its divisors is an integer number (2283787980).

Almost surely, 2^68701331440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68701331440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91351519200).

68701331440 is an abundant number, since it is smaller than the sum of its proper divisors (114001706960).

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

68701331440 is a wasteful number, since it uses less digits than its factorization.

68701331440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103370 (or 103364 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 68701331440 in words is "sixty-eight billion, seven hundred one million, three hundred thirty-one thousand, four hundred forty".