11749097209649 has 4 divisors (see below), whose sum is σ = 12259927523136. Its totient is φ = 11238266896164.

The previous prime is 11749097209627. The next prime is 11749097209667. The reversal of 11749097209649 is 94690279094711.

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 a de Polignac number, because none of the positive numbers 2^k-11749097209649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11749097209049) 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, 255415156709 + ... + 255415156754.

It is an arithmetic number, because the mean of its divisors is an integer number (3064981880784).

Almost surely, 2^{11749097209649} is an apocalyptic number.

It is an amenable number.

11749097209649 is a deficient number, since it is larger than the sum of its proper divisors (510830313487).

11749097209649 is an equidigital number, since it uses as much as digits as its factorization.

11749097209649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510830313486.

The product of its (nonzero) digits is 61725888, while the sum is 68.

The spelling of 11749097209649 in words is "eleven trillion, seven hundred forty-nine billion, ninety-seven million, two hundred nine thousand, six hundred forty-nine".