155400340001 has 4 divisors (see below), whose sum is σ = 155953366404. Its totient is φ = 154847313600.

The previous prime is 155400339989. The next prime is 155400340009. The reversal of 155400340001 is 100043004551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100043004551 = 7 ⋅14291857793.

It can be written as a sum of positive squares in 2 ways, for example, as 111823360000 + 43576980001 = 334400^2 + 208751^2 .

It is a cyclic number.

It is not a de Polignac number, because 155400340001 - 2³⁰ = 154326598177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155400340009) 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 in 3 ways as a sum of consecutive naturals, for example, 276512780 + ... + 276513341.

It is an arithmetic number, because the mean of its divisors is an integer number (38988341601).

Almost surely, 2^155400340001 is an apocalyptic number.

It is an amenable number.

155400340001 is a deficient number, since it is larger than the sum of its proper divisors (553026403).

155400340001 is an equidigital number, since it uses as much as digits as its factorization.

155400340001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553026402.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 155400340001 its reverse (100043004551), we get a palindrome (255443344552).

The spelling of 155400340001 in words is "one hundred fifty-five billion, four hundred million, three hundred forty thousand, one".