154513342221 has 8 divisors (see below), whose sum is σ = 235448902464. Its totient is φ = 88293338400.

The previous prime is 154513342201. The next prime is 154513342267. The reversal of 154513342221 is 122243315451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 154513342221 - 2¹⁰ = 154513341197 is a prime.

It is a super-2 number, since 2×154513342221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154513342201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3678889080 + ... + 3678889121.

It is an arithmetic number, because the mean of its divisors is an integer number (29431112808).

Almost surely, 2^154513342221 is an apocalyptic number.

It is an amenable number.

154513342221 is a deficient number, since it is larger than the sum of its proper divisors (80935560243).

154513342221 is an equidigital number, since it uses as much as digits as its factorization.

154513342221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7357778211.

The product of its digits is 28800, while the sum is 33.

Adding to 154513342221 its reverse (122243315451), we get a palindrome (276756657672).

The spelling of 154513342221 in words is "one hundred fifty-four billion, five hundred thirteen million, three hundred forty-two thousand, two hundred twenty-one".