155413561666542 has 32 divisors (see below), whose sum is σ = 311803488847008. Its totient is φ = 51641883211776.

The previous prime is 155413561666481. The next prime is 155413561666579. The reversal of 155413561666542 is 245666165314551.

155413561666542 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 15 ways as a sum of consecutive naturals, for example, 4388583 + ... + 18168290.

It is an arithmetic number, because the mean of its divisors is an integer number (9743859026469).

Almost surely, 2^{155413561666542} is an apocalyptic number.

155413561666542 is an abundant number, since it is smaller than the sum of its proper divisors (156389927180466).

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

155413561666542 is a wasteful number, since it uses less digits than its factorization.

155413561666542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22560484.

The product of its digits is 77760000, while the sum is 60.

The spelling of 155413561666542 in words is "one hundred fifty-five trillion, four hundred thirteen billion, five hundred sixty-one million, six hundred sixty-six thousand, five hundred forty-two".