11551516545506 has 16 divisors (see below), whose sum is σ = 19840608633600. Its totient is φ = 4941147737760.

The previous prime is 11551516545497. The next prime is 11551516545529. The reversal of 11551516545506 is 60554561515511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791843306 + ... + 791857893.

It is an arithmetic number, because the mean of its divisors is an integer number (1240038039600).

Almost surely, 2^{11551516545506} is an apocalyptic number.

11551516545506 is a deficient number, since it is larger than the sum of its proper divisors (8289092088094).

11551516545506 is a wasteful number, since it uses less digits than its factorization.

11551516545506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583701729.

The product of its (nonzero) digits is 2250000, while the sum is 50.

The spelling of 11551516545506 in words is "eleven trillion, five hundred fifty-one billion, five hundred sixteen million, five hundred forty-five thousand, five hundred six".