11619271944 has 192 divisors, whose sum is σ = 37916835840. Its totient is φ = 3144147840.

The previous prime is 11619271943. The next prime is 11619271969. The reversal of 11619271944 is 44917291611.

11619271944 is a `hidden beast` number, since 1 + 1 + 619 + 27 + 1 + 9 + 4 + 4 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 11619271944.

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

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 726417 + ... + 742239.

It is an arithmetic number, because the mean of its divisors is an integer number (197483520).

Almost surely, 2^11619271944 is an apocalyptic number.

11619271944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11619271944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18958417920).

11619271944 is an abundant number, since it is smaller than the sum of its proper divisors (26297563896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11619271944 is a wasteful number, since it uses less digits than its factorization.

11619271944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15920 (or 15913 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The spelling of 11619271944 in words is "eleven billion, six hundred nineteen million, two hundred seventy-one thousand, nine hundred forty-four".