68912550144 has 135 divisors (see below), whose sum is σ = 205597535143. Its totient is φ = 22958249472.

The previous prime is 68912550107. The next prime is 68912550151. The reversal of 68912550144 is 44105521986.

The square root of 68912550144 is 262512.

It is a perfect power (a square), and thus also a powerful number.

68912550144 is a `hidden beast` number, since 6 + 8 + 91 + 2 + 550 + 1 + 4 + 4 = 666.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68912550144.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 37800817 + ... + 37802639.

Almost surely, 2^68912550144 is an apocalyptic number.

68912550144 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

68912550144 is the 262512-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68912550144

68912550144 is an abundant number, since it is smaller than the sum of its proper divisors (136684984999).

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

68912550144 is an frugal number, since it uses more digits than its factorization.

68912550144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 68912550144 in words is "sixty-eight billion, nine hundred twelve million, five hundred fifty thousand, one hundred forty-four".