11999991540508 has 48 divisors (see below), whose sum is σ = 23406184720800. Its totient is φ = 5349697781760.

The previous prime is 11999991540503. The next prime is 11999991540577. The reversal of 11999991540508 is 80504519999911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11999991540503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58773238 + ... + 58977058.

It is an arithmetic number, because the mean of its divisors is an integer number (487628848350).

Almost surely, 2^{11999991540508} is an apocalyptic number.

It is an amenable number.

11999991540508 is a deficient number, since it is larger than the sum of its proper divisors (11406193180292).

11999991540508 is a wasteful number, since it uses less digits than its factorization.

11999991540508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249430 (or 249428 counting only the distinct ones).

The product of its (nonzero) digits is 47239200, while the sum is 70.

The spelling of 11999991540508 in words is "eleven trillion, nine hundred ninety-nine billion, nine hundred ninety-one million, five hundred forty thousand, five hundred eight".