11551542506516 has 24 divisors (see below), whose sum is σ = 20874107095296. Its totient is φ = 5587633416960.

The previous prime is 11551542506453. The next prime is 11551542506527. The reversal of 11551542506516 is 61560524515511.

It is a congruent number.

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, 14806781 + ... + 15567396.

It is an arithmetic number, because the mean of its divisors is an integer number (869754462304).

Almost surely, 2^{11551542506516} is an apocalyptic number.

It is an amenable number.

11551542506516 is a deficient number, since it is larger than the sum of its proper divisors (9322564588780).

11551542506516 is a wasteful number, since it uses less digits than its factorization.

11551542506516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30377279 (or 30377277 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 47.

The spelling of 11551542506516 in words is "eleven trillion, five hundred fifty-one billion, five hundred forty-two million, five hundred six thousand, five hundred sixteen".