150121543242505 has 8 divisors (see below), whose sum is σ = 190742666708232. Its totient is φ = 113032691382528.

The previous prime is 150121543242469. The next prime is 150121543242521. The reversal of 150121543242505 is 505242345121051.

It can be written as a sum of positive squares in 4 ways, for example, as 1556964910656 + 148564578331849 = 1247784^2 + 12188707^2 .

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 150121543242505 - 2²¹ = 150121541145353 is a prime.

It is a super-2 number, since 2×150121543242505² (a number of 29 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, 883067901342 + ... + 883067901511.

It is an arithmetic number, because the mean of its divisors is an integer number (23842833338529).

Almost surely, 2^{150121543242505} is an apocalyptic number.

It is an amenable number.

150121543242505 is a deficient number, since it is larger than the sum of its proper divisors (40621123465727).

150121543242505 is a wasteful number, since it uses less digits than its factorization.

150121543242505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766135802875.

The product of its (nonzero) digits is 240000, while the sum is 40.

Adding to 150121543242505 its reverse (505242345121051), we get a palindrome (655363888363556).

The spelling of 150121543242505 in words is "one hundred fifty trillion, one hundred twenty-one billion, five hundred forty-three million, two hundred forty-two thousand, five hundred five".