11619271945 has 8 divisors (see below), whose sum is σ = 14763310344. Its totient is φ = 8748628224.

The previous prime is 11619271943. The next prime is 11619271969. The reversal of 11619271945 is 54917291611.

It can be written as a sum of positive squares in 4 ways, for example, as 5253785289 + 6365486656 = 72483^2 + 79784^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11619271945 - 2¹ = 11619271943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11619271895 and 11619271904.

It is not an unprimeable number, because it can be changed into a prime (11619271943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68348574 + ... + 68348743.

It is an arithmetic number, because the mean of its divisors is an integer number (1845413793).

Almost surely, 2^11619271945 is an apocalyptic number.

It is an amenable number.

11619271945 is a deficient number, since it is larger than the sum of its proper divisors (3144038399).

11619271945 is a wasteful number, since it uses less digits than its factorization.

11619271945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136697339.

The product of its digits is 136080, while the sum is 46.

The spelling of 11619271945 in words is "eleven billion, six hundred nineteen million, two hundred seventy-one thousand, nine hundred forty-five".