68876881945 has 8 divisors (see below), whose sum is σ = 82848584520. Its totient is φ = 54970621440.

The previous prime is 68876881937. The next prime is 68876881949. The reversal of 68876881945 is 54918867886.

It can be written as a sum of positive squares in 4 ways, for example, as 8010071001 + 60866810944 = 89499^2 + 246712^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68876881945 - 2³ = 68876881937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68876881949) 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, 16358200 + ... + 16362409.

It is an arithmetic number, because the mean of its divisors is an integer number (10356073065).

Almost surely, 2^68876881945 is an apocalyptic number.

It is an amenable number.

68876881945 is a deficient number, since it is larger than the sum of its proper divisors (13971702575).

68876881945 is a wasteful number, since it uses less digits than its factorization.

68876881945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32721035.

The product of its digits is 185794560, while the sum is 70.

The spelling of 68876881945 in words is "sixty-eight billion, eight hundred seventy-six million, eight hundred eighty-one thousand, nine hundred forty-five".