155040542551 has 8 divisors (see below), whose sum is σ = 155233810944. Its totient is φ = 154847397240.

The previous prime is 155040542549. The next prime is 155040542581. The reversal of 155040542551 is 155245040551.

155040542551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155040542551 - 2¹ = 155040542549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155040542551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155040542581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2631546 + ... + 2689816.

It is an arithmetic number, because the mean of its divisors is an integer number (19404226368).

Almost surely, 2^155040542551 is an apocalyptic number.

155040542551 is a deficient number, since it is larger than the sum of its proper divisors (193268393).

155040542551 is a wasteful number, since it uses less digits than its factorization.

155040542551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61541.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 155040542551 in words is "one hundred fifty-five billion, forty million, five hundred forty-two thousand, five hundred fifty-one".