11619271968 has 48 divisors (see below), whose sum is σ = 30886692480. Its totient is φ = 3824061696.

The previous prime is 11619271943. The next prime is 11619271969. The reversal of 11619271968 is 86917291611.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 11619271968.

It is not an unprimeable number, because it can be changed into a prime (11619271969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758455 + ... + 773622.

It is an arithmetic number, because the mean of its divisors is an integer number (643472760).

Almost surely, 2^11619271968 is an apocalyptic number.

It is an amenable number.

11619271968 is an abundant number, since it is smaller than the sum of its proper divisors (19267420512).

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

11619271968 is a wasteful number, since it uses less digits than its factorization.

11619271968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532169 (or 1532161 counting only the distinct ones).

The product of its digits is 326592, while the sum is 51.

The spelling of 11619271968 in words is "eleven billion, six hundred nineteen million, two hundred seventy-one thousand, nine hundred sixty-eight".