68886763520 has 96 divisors (see below), whose sum is σ = 175011127200. Its totient is φ = 25933774848.

The previous prime is 68886763471. The next prime is 68886763541. The reversal of 68886763520 is 2536768886.

It is a self number, because there is not a number n which added to its sum of digits gives 68886763520.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 23780 + ... + 371939.

It is an arithmetic number, because the mean of its divisors is an integer number (1823032575).

Almost surely, 2^68886763520 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 68886763520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87505563600).

68886763520 is an abundant number, since it is smaller than the sum of its proper divisors (106124363680).

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

68886763520 is a wasteful number, since it uses less digits than its factorization.

68886763520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395763 (or 395743 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 59.

The spelling of 68886763520 in words is "sixty-eight billion, eight hundred eighty-six million, seven hundred sixty-three thousand, five hundred twenty".