11551531261606 has 16 divisors (see below), whose sum is σ = 20967485315616. Its totient is φ = 4659441181056.

The previous prime is 11551531261577. The next prime is 11551531261619. The reversal of 11551531261606 is 60616213515511.

11551531261606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 24267922581 + ... + 24267923056.

It is an arithmetic number, because the mean of its divisors is an integer number (1310467832226).

Almost surely, 2^{11551531261606} is an apocalyptic number.

11551531261606 is a deficient number, since it is larger than the sum of its proper divisors (9415954054010).

11551531261606 is a wasteful number, since it uses less digits than its factorization.

11551531261606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48535845663.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 11551531261606 in words is "eleven trillion, five hundred fifty-one billion, five hundred thirty-one million, two hundred sixty-one thousand, six hundred six".