68626430182420 has 144 divisors (see below), whose sum is σ = 173509725125520. Its totient is φ = 22677219389440.

The previous prime is 68626430182411. The next prime is 68626430182421. The reversal of 68626430182420 is 2428103462686.

It can be written as a sum of positive squares in 8 ways, for example, as 1885667254416 + 66740762928004 = 1373196^2 + 8169502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68626430182421) 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, 27567619 + ... + 29953738.

It is an arithmetic number, because the mean of its divisors is an integer number (1204928646705).

Almost surely, 2^{68626430182420} is an apocalyptic number.

It is an amenable number.

68626430182420 is an abundant number, since it is smaller than the sum of its proper divisors (104883294943100).

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

68626430182420 is a wasteful number, since it uses less digits than its factorization.

68626430182420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57521434 (or 57521421 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 52.

The spelling of 68626430182420 in words is "sixty-eight trillion, six hundred twenty-six billion, four hundred thirty million, one hundred eighty-two thousand, four hundred twenty".