11953765562389 has 4 divisors (see below), whose sum is σ = 13661446357024. Its totient is φ = 10246084767756.

The previous prime is 11953765562371. The next prime is 11953765562443. The reversal of 11953765562389 is 98326556735911.

It is a happy number.

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 11953765562389 - 2²⁷ = 11953631344661 is a prime.

It is a super-2 number, since 2×11953765562389² (a number of 27 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 (11953765562989) 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, 853840397307 + ... + 853840397320.

It is an arithmetic number, because the mean of its divisors is an integer number (3415361589256).

Almost surely, 2^{11953765562389} is an apocalyptic number.

It is an amenable number.

11953765562389 is a deficient number, since it is larger than the sum of its proper divisors (1707680794635).

11953765562389 is an equidigital number, since it uses as much as digits as its factorization.

11953765562389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707680794634.

The product of its digits is 367416000, while the sum is 70.

The spelling of 11953765562389 in words is "eleven trillion, nine hundred fifty-three billion, seven hundred sixty-five million, five hundred sixty-two thousand, three hundred eighty-nine".