68025744040 has 64 divisors (see below), whose sum is σ = 158868702720. Its totient is φ = 26186976000.

The previous prime is 68025744029. The next prime is 68025744043. The reversal of 68025744040 is 4044752086.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 68025743984 and 68025744002.

It is not an unprimeable number, because it can be changed into a prime (68025744043) 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, 72895 + ... + 375985.

It is an arithmetic number, because the mean of its divisors is an integer number (2482323480).

Almost surely, 2^68025744040 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 68025744040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79434351360).

68025744040 is an abundant number, since it is smaller than the sum of its proper divisors (90842958680).

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

68025744040 is a wasteful number, since it uses less digits than its factorization.

68025744040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303314 (or 303310 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 68025744040 in words is "sixty-eight billion, twenty-five million, seven hundred forty-four thousand, forty".