664600535140555 has 16 divisors (see below), whose sum is σ = 909390053515104. Its totient is φ = 461912408133120.

The previous prime is 664600535140463. The next prime is 664600535140573. The reversal of 664600535140555 is 555041535006466.

664600535140555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664600535140555 - 2¹⁹ = 664600534616267 is a prime.

It is a super-2 number, since 2×664600535140555² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664600535140496 and 664600535140505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300724222941 + ... + 300724225150.

It is an arithmetic number, because the mean of its divisors is an integer number (56836878344694).

Almost surely, 2^{664600535140555} is an apocalyptic number.

664600535140555 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

664600535140555 is a deficient number, since it is larger than the sum of its proper divisors (244789518374549).

664600535140555 is a wasteful number, since it uses less digits than its factorization.

664600535140555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601448448126.

The product of its (nonzero) digits is 32400000, while the sum is 55.

The spelling of 664600535140555 in words is "six hundred sixty-four trillion, six hundred billion, five hundred thirty-five million, one hundred forty thousand, five hundred fifty-five".