68648746254 has 64 divisors (see below), whose sum is σ = 156447825408. Its totient is φ = 19878249600.

The previous prime is 68648746249. The next prime is 68648746259. The reversal of 68648746254 is 45264784686.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68648746249) and next prime (68648746259).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68648746259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1527732 + ... + 1572024.

It is an arithmetic number, because the mean of its divisors is an integer number (2444497272).

Almost surely, 2^68648746254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68648746254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78223912704).

68648746254 is an abundant number, since it is smaller than the sum of its proper divisors (87799079154).

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

68648746254 is a wasteful number, since it uses less digits than its factorization.

68648746254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45353.

The product of its digits is 61931520, while the sum is 60.

The spelling of 68648746254 in words is "sixty-eight billion, six hundred forty-eight million, seven hundred forty-six thousand, two hundred fifty-four".