155122001405 has 16 divisors (see below), whose sum is σ = 217265103360. Its totient is φ = 104106193152.

The previous prime is 155122001393. The next prime is 155122001413. The reversal of 155122001405 is 504100221551.

It is a cyclic number.

It is not a de Polignac number, because 155122001405 - 2¹⁰ = 155122000381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47147900 + ... + 47151189.

It is an arithmetic number, because the mean of its divisors is an integer number (13579068960).

Almost surely, 2^155122001405 is an apocalyptic number.

It is an amenable number.

155122001405 is a deficient number, since it is larger than the sum of its proper divisors (62143101955).

155122001405 is an equidigital number, since it uses as much as digits as its factorization.

155122001405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94299148.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 155122001405 its reverse (504100221551), we get a palindrome (659222222956).

The spelling of 155122001405 in words is "one hundred fifty-five billion, one hundred twenty-two million, one thousand, four hundred five".