68555476020 has 144 divisors (see below), whose sum is σ = 206957983680. Its totient is φ = 16948985856.

The previous prime is 68555476013. The next prime is 68555476027. The reversal of 68555476020 is 2067455586.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68555476013) and next prime (68555476027).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68555476027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1132276 + ... + 1191284.

It is an arithmetic number, because the mean of its divisors is an integer number (1437208220).

Almost surely, 2^68555476020 is an apocalyptic number.

68555476020 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 68555476020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103478991840).

68555476020 is an abundant number, since it is smaller than the sum of its proper divisors (138402507660).

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

68555476020 is a wasteful number, since it uses less digits than its factorization.

68555476020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59122 (or 59103 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 68555476020 in words is "sixty-eight billion, five hundred fifty-five million, four hundred seventy-six thousand, twenty".