13542555666 has 32 divisors (see below), whose sum is σ = 27864321408. Its totient is φ = 4384730880.

The previous prime is 13542555659. The next prime is 13542555671. The reversal of 13542555666 is 66655524531.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80211 + ... + 183081.

It is an arithmetic number, because the mean of its divisors is an integer number (870760044).

Almost surely, 2^13542555666 is an apocalyptic number.

13542555666 is an abundant number, since it is smaller than the sum of its proper divisors (14321765742).

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

13542555666 is a wasteful number, since it uses less digits than its factorization.

13542555666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103506.

The product of its digits is 3240000, while the sum is 48.

The spelling of 13542555666 in words is "thirteen billion, five hundred forty-two million, five hundred fifty-five thousand, six hundred sixty-six".