2604160015081 has 3 divisors (see below), whose sum is σ = 2604161628823. Its totient is φ = 2604158401340.

The previous prime is 2604160015049. The next prime is 2604160015111. The reversal of 2604160015081 is 1805100614062.

The square root of 2604160015081 is 1613741.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2598734219481 + 5425795600 = 1612059^2 + 73660^2 .

It is not a de Polignac number, because 2604160015081 - 2⁵ = 2604160015049 is a prime.

It is a super-2 number, since 2×2604160015081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2604160012081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 806871 + ... + 2420611.

Almost surely, 2^{2604160015081} is an apocalyptic number.

2604160015081 is the 1613741-st square number.

2604160015081 is the 806871-st centered octagonal number.

It is an amenable number.

2604160015081 is a deficient number, since it is larger than the sum of its proper divisors (1613742).

2604160015081 is an frugal number, since it uses more digits than its factorization.

2604160015081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227482 (or 1613741 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 2604160015081 in words is "two trillion, six hundred four billion, one hundred sixty million, fifteen thousand, eighty-one".