154421133455 has 4 divisors (see below), whose sum is σ = 185305360152. Its totient is φ = 123536906760.

The previous prime is 154421133403. The next prime is 154421133487. The reversal of 154421133455 is 554331124451.

154421133455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 154421133455 - 2²⁸ = 154152697999 is a prime.

It is a super-3 number, since 3×154421133455³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15442113341 + ... + 15442113350.

It is an arithmetic number, because the mean of its divisors is an integer number (46326340038).

Almost surely, 2^154421133455 is an apocalyptic number.

154421133455 is a deficient number, since it is larger than the sum of its proper divisors (30884226697).

154421133455 is an equidigital number, since it uses as much as digits as its factorization.

154421133455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30884226696.

The product of its digits is 144000, while the sum is 38.

The spelling of 154421133455 in words is "one hundred fifty-four billion, four hundred twenty-one million, one hundred thirty-three thousand, four hundred fifty-five".