154557844542 has 12 divisors (see below), whose sum is σ = 334875329880. Its totient is φ = 51519281508.

The previous prime is 154557844541. The next prime is 154557844549. The reversal of 154557844542 is 245448755451.

154557844542 is a `hidden beast` number, since 1 + 5 + 4 + 5 + 57 + 8 + 44 + 542 = 666.

154557844542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154557844541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4293273442 + ... + 4293273477.

It is an arithmetic number, because the mean of its divisors is an integer number (27906277490).

Almost surely, 2^154557844542 is an apocalyptic number.

154557844542 is an abundant number, since it is smaller than the sum of its proper divisors (180317485338).

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

154557844542 is a wasteful number, since it uses less digits than its factorization.

154557844542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8586546927 (or 8586546924 counting only the distinct ones).

The product of its digits is 17920000, while the sum is 54.

The spelling of 154557844542 in words is "one hundred fifty-four billion, five hundred fifty-seven million, eight hundred forty-four thousand, five hundred forty-two".