68550257880 has 320 divisors, whose sum is σ = 248613472800. Its totient is φ = 16840949760.

The previous prime is 68550257863. The next prime is 68550257891. The reversal of 68550257880 is 8875205586.

It is a happy number.

68550257880 is a `hidden beast` number, since 6 + 8 + 5 + 502 + 57 + 8 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 26997651 + ... + 27000189.

Almost surely, 2^68550257880 is an apocalyptic number.

68550257880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68550257880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124306736400).

68550257880 is an abundant number, since it is smaller than the sum of its proper divisors (180063214920).

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

68550257880 is a wasteful number, since it uses less digits than its factorization.

68550257880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216 (or 3203 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 54.

The spelling of 68550257880 in words is "sixty-eight billion, five hundred fifty million, two hundred fifty-seven thousand, eight hundred eighty".