68861419536 has 160 divisors (see below), whose sum is σ = 222655749120. Its totient is φ = 17853368832.

The previous prime is 68861419511. The next prime is 68861419553. The reversal of 68861419536 is 63591416886.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124111 + ... + 391313.

It is an arithmetic number, because the mean of its divisors is an integer number (1391598432).

Almost surely, 2^68861419536 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 68861419536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111327874560).

68861419536 is an abundant number, since it is smaller than the sum of its proper divisors (153794329584).

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

68861419536 is a wasteful number, since it uses less digits than its factorization.

68861419536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267293 (or 267287 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The spelling of 68861419536 in words is "sixty-eight billion, eight hundred sixty-one million, four hundred nineteen thousand, five hundred thirty-six".