11951449345 has 8 divisors (see below), whose sum is σ = 15645533760. Its totient is φ = 8691963120.

The previous prime is 11951449343. The next prime is 11951449357. The reversal of 11951449345 is 54394415911.

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

It is not a de Polignac number, because 11951449345 - 2¹ = 11951449343 is a prime.

It is a super-2 number, since 2×11951449345² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11951449295 and 11951449304.

It is not an unprimeable number, because it can be changed into a prime (11951449343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108649485 + ... + 108649594.

It is an arithmetic number, because the mean of its divisors is an integer number (1955691720).

Almost surely, 2^11951449345 is an apocalyptic number.

It is an amenable number.

11951449345 is a deficient number, since it is larger than the sum of its proper divisors (3694084415).

11951449345 is a wasteful number, since it uses less digits than its factorization.

11951449345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217299095.

The product of its digits is 388800, while the sum is 46.

The spelling of 11951449345 in words is "eleven billion, nine hundred fifty-one million, four hundred forty-nine thousand, three hundred forty-five".