1163645500253 has 16 divisors (see below), whose sum is σ = 1276032766464. Its totient is φ = 1056796581120.

The previous prime is 1163645500243. The next prime is 1163645500273. The reversal of 1163645500253 is 3520055463611.

It is a cyclic number.

It is not a de Polignac number, because 1163645500253 - 2⁸ = 1163645499997 is a prime.

It is a super-3 number, since 3×1163645500253³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1163645500253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163645500243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10199450 + ... + 10312907.

It is an arithmetic number, because the mean of its divisors is an integer number (79752047904).

Almost surely, 2^{1163645500253} is an apocalyptic number.

It is an amenable number.

1163645500253 is a deficient number, since it is larger than the sum of its proper divisors (112387266211).

1163645500253 is a wasteful number, since it uses less digits than its factorization.

1163645500253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20512492.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 1163645500253 in words is "one trillion, one hundred sixty-three billion, six hundred forty-five million, five hundred thousand, two hundred fifty-three".