64180606620730 has 16 divisors (see below), whose sum is σ = 115547321199240. Its totient is φ = 25667302807872.

The previous prime is 64180606620727. The next prime is 64180606620761. The reversal of 64180606620730 is 3702660608146.

64180606620730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 57292622117721 + 6887984503009 = 7569189^2 + 2624497^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 617425485 + ... + 617529424.

Almost surely, 2^{64180606620730} is an apocalyptic number.

64180606620730 is a deficient number, since it is larger than the sum of its proper divisors (51366714578510).

64180606620730 is a wasteful number, since it uses less digits than its factorization.

64180606620730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234960113.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 64180606620730 in words is "sixty-four trillion, one hundred eighty billion, six hundred six million, six hundred twenty thousand, seven hundred thirty".