155405051423 has 2 divisors, whose sum is σ = 155405051424. Its totient is φ = 155405051422.

The previous prime is 155405051383. The next prime is 155405051449. The reversal of 155405051423 is 324150504551.

It is a strong prime.

It is an emirp because it is prime and its reverse (324150504551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155405051423 - 2⁶ = 155405051359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155405051623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77702525711 + 77702525712.

It is an arithmetic number, because the mean of its divisors is an integer number (77702525712).

Almost surely, 2^155405051423 is an apocalyptic number.

155405051423 is a deficient number, since it is larger than the sum of its proper divisors (1).

155405051423 is an equidigital number, since it uses as much as digits as its factorization.

155405051423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 155405051423 its reverse (324150504551), we get a palindrome (479555555974).

The spelling of 155405051423 in words is "one hundred fifty-five billion, four hundred five million, fifty-one thousand, four hundred twenty-three".