11857864750469 has 4 divisors (see below), whose sum is σ = 11919304464396. Its totient is φ = 11796425036544.

The previous prime is 11857864750447. The next prime is 11857864750553. The reversal of 11857864750469 is 96405746875811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 932261698369 + 10925603052100 = 965537^2 + 3305390^2 .

It is a cyclic number.

It is not a de Polignac number, because 11857864750469 - 2⁸ = 11857864750213 is a prime.

It is a super-2 number, since 2×11857864750469² (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 (11857864050469) 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, 30719856674 + ... + 30719857059.

It is an arithmetic number, because the mean of its divisors is an integer number (2979826116099).

Almost surely, 2^{11857864750469} is an apocalyptic number.

It is an amenable number.

11857864750469 is a deficient number, since it is larger than the sum of its proper divisors (61439713927).

11857864750469 is an equidigital number, since it uses as much as digits as its factorization.

11857864750469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61439713926.

The product of its (nonzero) digits is 406425600, while the sum is 71.

The spelling of 11857864750469 in words is "eleven trillion, eight hundred fifty-seven billion, eight hundred sixty-four million, seven hundred fifty thousand, four hundred sixty-nine".