68031457650 has 288 divisors, whose sum is σ = 215149229568. Its totient is φ = 15252019200.

The previous prime is 68031457621. The next prime is 68031457673. The reversal of 68031457650 is 5675413086.

68031457650 is a `hidden beast` number, since 68 + 0 + 3 + 14 + 576 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 68031457596 and 68031457605.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3071917 + ... + 3093983.

It is an arithmetic number, because the mean of its divisors is an integer number (747045936).

Almost surely, 2^68031457650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68031457650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107574614784).

68031457650 is an abundant number, since it is smaller than the sum of its proper divisors (147117771918).

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

68031457650 is a wasteful number, since it uses less digits than its factorization.

68031457650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22146 (or 22138 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 68031457650 in words is "sixty-eight billion, thirty-one million, four hundred fifty-seven thousand, six hundred fifty".