11272991649 has 8 divisors (see below), whose sum is σ = 15048833760. Its totient is φ = 7506238656.

The previous prime is 11272991629. The next prime is 11272991651. The reversal of 11272991649 is 94619927211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11272991649 - 2²¹ = 11270894497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11272991629) 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 7 ways as a sum of consecutive naturals, for example, 2269384 + ... + 2274345.

It is an arithmetic number, because the mean of its divisors is an integer number (1881104220).

Almost surely, 2^11272991649 is an apocalyptic number.

It is an amenable number.

11272991649 is a deficient number, since it is larger than the sum of its proper divisors (3775842111).

11272991649 is an equidigital number, since it uses as much as digits as its factorization.

11272991649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544559.

The product of its digits is 489888, while the sum is 51.

The spelling of 11272991649 in words is "eleven billion, two hundred seventy-two million, nine hundred ninety-one thousand, six hundred forty-nine".