68999852064 has 192 divisors, whose sum is σ = 222042498048. Its totient is φ = 18461414400.

The previous prime is 68999852039. The next prime is 68999852101. The reversal of 68999852064 is 46025899986.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 68999851986 and 68999852004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206479 + ... + 425009.

It is an arithmetic number, because the mean of its divisors is an integer number (1156471344).

Almost surely, 2^68999852064 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 68999852064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111021249024).

68999852064 is an abundant number, since it is smaller than the sum of its proper divisors (153042645984).

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

68999852064 is a wasteful number, since it uses less digits than its factorization.

68999852064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218591 (or 218583 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 66.

The spelling of 68999852064 in words is "sixty-eight billion, nine hundred ninety-nine million, eight hundred fifty-two thousand, sixty-four".