68821443075 has 48 divisors (see below), whose sum is σ = 141861563136. Its totient is φ = 28601116800.

The previous prime is 68821443071. The next prime is 68821443091. The reversal of 68821443075 is 57034412886.

It is not a de Polignac number, because 68821443075 - 2² = 68821443071 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68821443071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5952792 + ... + 5964341.

It is an arithmetic number, because the mean of its divisors is an integer number (2955449232).

Almost surely, 2^68821443075 is an apocalyptic number.

68821443075 is an abundant number, since it is smaller than the sum of its proper divisors (73040120061).

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

68821443075 is a wasteful number, since it uses less digits than its factorization.

68821443075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11917164 (or 11917159 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 68821443075 in words is "sixty-eight billion, eight hundred twenty-one million, four hundred forty-three thousand, seventy-five".