7081561141 has 4 divisors (see below), whose sum is σ = 7109774784. Its totient is φ = 7053347500.

The previous prime is 7081561129. The next prime is 7081561147. The reversal of 7081561141 is 1411651807.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7081561141 - 2²⁷ = 6947343413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7081561097 and 7081561106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7081561147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14106445 + ... + 14106946.

It is an arithmetic number, because the mean of its divisors is an integer number (1777443696).

Almost surely, 2^7081561141 is an apocalyptic number.

It is an amenable number.

7081561141 is a deficient number, since it is larger than the sum of its proper divisors (28213643).

7081561141 is a wasteful number, since it uses less digits than its factorization.

7081561141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28213642.

The product of its (nonzero) digits is 6720, while the sum is 34.

The square root of 7081561141 is about 84152.0121030983. The cubic root of 7081561141 is about 1920.3320769837.

The spelling of 7081561141 in words is "seven billion, eighty-one million, five hundred sixty-one thousand, one hundred forty-one".