68329399040 has 144 divisors (see below), whose sum is σ = 196897048320. Its totient is φ = 22194155520.

The previous prime is 68329399027. The next prime is 68329399049. The reversal of 68329399040 is 4099392386.

It is not an unprimeable number, because it can be changed into a prime (68329399049) 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, 30446 + ... + 370925.

Almost surely, 2^68329399040 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 68329399040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98448524160).

68329399040 is an abundant number, since it is smaller than the sum of its proper divisors (128567649280).

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

68329399040 is a wasteful number, since it uses less digits than its factorization.

68329399040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401418 (or 401404 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 53.

The spelling of 68329399040 in words is "sixty-eight billion, three hundred twenty-nine million, three hundred ninety-nine thousand, forty".