155240132043551 has 2 divisors, whose sum is σ = 155240132043552. Its totient is φ = 155240132043550.

The previous prime is 155240132043547. The next prime is 155240132043559. The reversal of 155240132043551 is 155340231042551.

155240132043551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155240132043551 - 2² = 155240132043547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155240132043499 and 155240132043508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155240132043559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77620066021775 + 77620066021776.

It is an arithmetic number, because the mean of its divisors is an integer number (77620066021776).

Almost surely, 2^{155240132043551} is an apocalyptic number.

155240132043551 is a deficient number, since it is larger than the sum of its proper divisors (1).

155240132043551 is an equidigital number, since it uses as much as digits as its factorization.

155240132043551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 155240132043551 in words is "one hundred fifty-five trillion, two hundred forty billion, one hundred thirty-two million, forty-three thousand, five hundred fifty-one".