1155490079569 has 4 divisors (see below), whose sum is σ = 1320560090944. Its totient is φ = 990420068196.

The previous prime is 1155490079567. The next prime is 1155490079641. The reversal of 1155490079569 is 9659700945511.

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 1155490079569 - 2¹ = 1155490079567 is a prime.

It is a super-2 number, since 2×1155490079569² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155490079563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82535005677 + ... + 82535005690.

It is an arithmetic number, because the mean of its divisors is an integer number (330140022736).

Almost surely, 2^{1155490079569} is an apocalyptic number.

It is an amenable number.

1155490079569 is a deficient number, since it is larger than the sum of its proper divisors (165070011375).

1155490079569 is an equidigital number, since it uses as much as digits as its factorization.

1155490079569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165070011374.

The product of its (nonzero) digits is 15309000, while the sum is 61.

The spelling of 1155490079569 in words is "one trillion, one hundred fifty-five billion, four hundred ninety million, seventy-nine thousand, five hundred sixty-nine".