1123115772565 has 8 divisors (see below), whose sum is σ = 1379081693088. Its totient is φ = 877597440720.

The previous prime is 1123115772563. The next prime is 1123115772587. The reversal of 1123115772565 is 5652775113211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123115772565 - 2¹ = 1123115772563 is a prime.

It is a super-2 number, since 2×1123115772565² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123115772563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2611896931 + ... + 2611897360.

It is an arithmetic number, because the mean of its divisors is an integer number (172385211636).

Almost surely, 2^{1123115772565} is an apocalyptic number.

It is an amenable number.

1123115772565 is a deficient number, since it is larger than the sum of its proper divisors (255965920523).

1123115772565 is an equidigital number, since it uses as much as digits as its factorization.

1123115772565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5223794339.

The product of its digits is 441000, while the sum is 46.

The spelling of 1123115772565 in words is "one trillion, one hundred twenty-three billion, one hundred fifteen million, seven hundred seventy-two thousand, five hundred sixty-five".