154520342245 has 4 divisors (see below), whose sum is σ = 185424410700. Its totient is φ = 123616273792.

The previous prime is 154520342231. The next prime is 154520342261. The reversal of 154520342245 is 542243025451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542243025451 = 97 ⋅5590134283.

It can be written as a sum of positive squares in 2 ways, for example, as 57974045284 + 96546296961 = 240778^2 + 310719^2 .

It is a cyclic number.

It is not a de Polignac number, because 154520342245 - 2⁵ = 154520342213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15452034220 + ... + 15452034229.

It is an arithmetic number, because the mean of its divisors is an integer number (46356102675).

Almost surely, 2^154520342245 is an apocalyptic number.

It is an amenable number.

154520342245 is a deficient number, since it is larger than the sum of its proper divisors (30904068455).

154520342245 is an equidigital number, since it uses as much as digits as its factorization.

154520342245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30904068454.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 154520342245 its reverse (542243025451), we get a palindrome (696763367696).

The spelling of 154520342245 in words is "one hundred fifty-four billion, five hundred twenty million, three hundred forty-two thousand, two hundred forty-five".