155443042451 has 2 divisors, whose sum is σ = 155443042452. Its totient is φ = 155443042450.

The previous prime is 155443042373. The next prime is 155443042457. The reversal of 155443042451 is 154240344551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155443042451 - 2³⁴ = 138263173267 is a prime.

It is not a weakly prime, because it can be changed into another prime (155443042457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77721521225 + 77721521226.

It is an arithmetic number, because the mean of its divisors is an integer number (77721521226).

Almost surely, 2^155443042451 is an apocalyptic number.

155443042451 is a deficient number, since it is larger than the sum of its proper divisors (1).

155443042451 is an equidigital number, since it uses as much as digits as its factorization.

155443042451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 155443042451 in words is "one hundred fifty-five billion, four hundred forty-three million, forty-two thousand, four hundred fifty-one".