68886619440 has 80 divisors (see below), whose sum is σ = 215948008800. Its totient is φ = 18163357696.

The previous prime is 68886619427. The next prime is 68886619441. The reversal of 68886619440 is 4491668886.

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

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (68886619441) 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, 1591155 + ... + 1633874.

It is an arithmetic number, because the mean of its divisors is an integer number (2699350110).

Almost surely, 2^68886619440 is an apocalyptic number.

68886619440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68886619440 is an abundant number, since it is smaller than the sum of its proper divisors (147061389360).

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

68886619440 is a wasteful number, since it uses less digits than its factorization.

68886619440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225134 (or 3225128 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 60.

The spelling of 68886619440 in words is "sixty-eight billion, eight hundred eighty-six million, six hundred nineteen thousand, four hundred forty".