605661005551264 has 36 divisors (see below), whose sum is σ = 1291173397385886. Its totient is φ = 279535848713472.

The previous prime is 605661005551253. The next prime is 605661005551291. The reversal of 605661005551264 is 462155500166506.

It can be written as a sum of positive squares in 3 ways, for example, as 498365797995664 + 107295207555600 = 22324108^2 + 10358340^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55996759159 + ... + 55996769974.

Almost surely, 2^{605661005551264} is an apocalyptic number.

It is an amenable number.

605661005551264 is an abundant number, since it is smaller than the sum of its proper divisors (685512391834622).

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

605661005551264 is a wasteful number, since it uses less digits than its factorization.

605661005551264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111993529169 (or 111993529148 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 52.

The spelling of 605661005551264 in words is "six hundred five trillion, six hundred sixty-one billion, five million, five hundred fifty-one thousand, two hundred sixty-four".