154213227745 has 8 divisors (see below), whose sum is σ = 185300337384. Its totient is φ = 123207606144.

The previous prime is 154213227713. The next prime is 154213227821. The reversal of 154213227745 is 547722312451.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9030890961 + 145182336784 = 95031^2 + 381028^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 154213227745 - 2⁵ = 154213227713 is a prime.

It is a super-2 number, since 2×154213227745² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20367844 + ... + 20375413.

It is an arithmetic number, because the mean of its divisors is an integer number (23162542173).

Almost surely, 2^154213227745 is an apocalyptic number.

It is an amenable number.

154213227745 is a deficient number, since it is larger than the sum of its proper divisors (31087109639).

154213227745 is an equidigital number, since it uses as much as digits as its factorization.

154213227745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40744019.

The product of its digits is 470400, while the sum is 43.

The spelling of 154213227745 in words is "one hundred fifty-four billion, two hundred thirteen million, two hundred twenty-seven thousand, seven hundred forty-five".