1161297245535 has 16 divisors (see below), whose sum is σ = 2123514963456. Its totient is φ = 530878740768.

The previous prime is 1161297245467. The next prime is 1161297245587. The reversal of 1161297245535 is 5355427921611.

It is not a de Polignac number, because 1161297245535 - 2⁸ = 1161297245279 is a prime.

It is a super-2 number, since 2×1161297245535² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5529986779 + ... + 5529986988.

It is an arithmetic number, because the mean of its divisors is an integer number (132719685216).

Almost surely, 2^{1161297245535} is an apocalyptic number.

1161297245535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1161297245535 is a deficient number, since it is larger than the sum of its proper divisors (962217717921).

1161297245535 is a wasteful number, since it uses less digits than its factorization.

1161297245535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11059973782.

The product of its digits is 2268000, while the sum is 51.

The spelling of 1161297245535 in words is "one trillion, one hundred sixty-one billion, two hundred ninety-seven million, two hundred forty-five thousand, five hundred thirty-five".