7561551165 has 32 divisors (see below), whose sum is σ = 13830414336. Its totient is φ = 3455814720.

The previous prime is 7561551133. The next prime is 7561551167. The reversal of 7561551165 is 5611551657.

It is not a de Polignac number, because 7561551165 - 2⁵ = 7561551133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7561551167) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 567874 + ... + 581036.

It is an arithmetic number, because the mean of its divisors is an integer number (432200448).

Almost surely, 2^7561551165 is an apocalyptic number.

It is an amenable number.

7561551165 is a deficient number, since it is larger than the sum of its proper divisors (6268863171).

7561551165 is a wasteful number, since it uses less digits than its factorization.

7561551165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18649.

The product of its digits is 157500, while the sum is 42.

The square root of 7561551165 is about 86957.1800658232. The cubic root of 7561551165 is about 1962.7740087742.

The spelling of 7561551165 in words is "seven billion, five hundred sixty-one million, five hundred fifty-one thousand, one hundred sixty-five".