11570212749 has 4 divisors (see below), whose sum is σ = 15426950336. Its totient is φ = 7713475164.

The previous prime is 11570212747. The next prime is 11570212807. The reversal of 11570212749 is 94721207511.

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 not a de Polignac number, because 11570212749 - 2¹ = 11570212747 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11570212741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1928368789 + ... + 1928368794.

It is an arithmetic number, because the mean of its divisors is an integer number (3856737584).

Almost surely, 2^11570212749 is an apocalyptic number.

It is an amenable number.

11570212749 is a deficient number, since it is larger than the sum of its proper divisors (3856737587).

11570212749 is an equidigital number, since it uses as much as digits as its factorization.

11570212749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856737586.

The product of its (nonzero) digits is 35280, while the sum is 39.

The spelling of 11570212749 in words is "eleven billion, five hundred seventy million, two hundred twelve thousand, seven hundred forty-nine".