155142666241551 has 32 divisors (see below), whose sum is σ = 229916256131520. Its totient is φ = 103394578430592.

The previous prime is 155142666241547. The next prime is 155142666241567.

155142666241551 is nontrivially palindromic in base 10.

155142666241551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155142666241551 - 2² = 155142666241547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155142666245551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1144617781 + ... + 1144753313.

It is an arithmetic number, because the mean of its divisors is an integer number (7184883004110).

Almost surely, 2^{155142666241551} is an apocalyptic number.

155142666241551 is a deficient number, since it is larger than the sum of its proper divisors (74773589889969).

155142666241551 is a wasteful number, since it uses less digits than its factorization.

155142666241551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149112 (or 149106 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 54.

The spelling of 155142666241551 in words is "one hundred fifty-five trillion, one hundred forty-two billion, six hundred sixty-six million, two hundred forty-one thousand, five hundred fifty-one".