1157665533645 has 16 divisors (see below), whose sum is σ = 1854945427392. Its totient is φ = 616528093440.

The previous prime is 1157665533637. The next prime is 1157665533677. The reversal of 1157665533645 is 5463355667511.

It is a happy number.

It is not a de Polignac number, because 1157665533645 - 2³ = 1157665533637 is a prime.

It is a super-3 number, since 3×1157665533645³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55834572 + ... + 55855301.

It is an arithmetic number, because the mean of its divisors is an integer number (115934089212).

Almost surely, 2^{1157665533645} is an apocalyptic number.

1157665533645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1157665533645 is a deficient number, since it is larger than the sum of its proper divisors (697279893747).

1157665533645 is a wasteful number, since it uses less digits than its factorization.

1157665533645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111690572.

The product of its digits is 34020000, while the sum is 57.

The spelling of 1157665533645 in words is "one trillion, one hundred fifty-seven billion, six hundred sixty-five million, five hundred thirty-three thousand, six hundred forty-five".