265841297604 has 27 divisors (see below), whose sum is σ = 671995544493. Its totient is φ = 88612734672.

The previous prime is 265841297591. The next prime is 265841297621. The reversal of 265841297604 is 406792148562.

The square root of 265841297604 is 515598.

It is a perfect power (a square), and thus also a powerful number.

265841297604 is a `hidden beast` number, since 2 + 6 + 5 + 8 + 4 + 1 + 29 + 7 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 169587476100 + 96253821504 = 411810^2 + 310248^2 .

It is a super-2 number, since 2×265841297604² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3050622 + ... + 3136554.

Almost surely, 2^265841297604 is an apocalyptic number.

265841297604 is the 515598-th square number.

It is an amenable number.

265841297604 is an abundant number, since it is smaller than the sum of its proper divisors (406154246889).

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

265841297604 is an frugal number, since it uses more digits than its factorization.

265841297604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171876 (or 85938 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 265841297604 in words is "two hundred sixty-five billion, eight hundred forty-one million, two hundred ninety-seven thousand, six hundred four".