68143473730 has 16 divisors (see below), whose sum is σ = 122661453240. Its totient is φ = 27256678272.

The previous prime is 68143473719. The next prime is 68143473731. The reversal of 68143473730 is 3737434186.

It can be written as a sum of positive squares in 4 ways, for example, as 55860849801 + 12282623929 = 236349^2 + 110827^2 .

It is a super-2 number, since 2×68143473730² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68143473731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498016 + ... + 619924.

Almost surely, 2^68143473730 is an apocalyptic number.

68143473730 is a deficient number, since it is larger than the sum of its proper divisors (54517979510).

68143473730 is a wasteful number, since it uses less digits than its factorization.

68143473730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177813.

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 68143473730 in words is "sixty-eight billion, one hundred forty-three million, four hundred seventy-three thousand, seven hundred thirty".