150112145542521 has 4 divisors (see below), whose sum is σ = 200149527390032. Its totient is φ = 100074763695012.

The previous prime is 150112145542367. The next prime is 150112145542549. The reversal of 150112145542521 is 125245541211051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 150112145542521 - 2³⁸ = 149837267635577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 150112145542521.

It is not an unprimeable number, because it can be changed into a prime (150112145544521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25018690923751 + ... + 25018690923756.

It is an arithmetic number, because the mean of its divisors is an integer number (50037381847508).

Almost surely, 2^{150112145542521} is an apocalyptic number.

It is an amenable number.

150112145542521 is a deficient number, since it is larger than the sum of its proper divisors (50037381847511).

150112145542521 is an equidigital number, since it uses as much as digits as its factorization.

150112145542521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50037381847510.

The product of its (nonzero) digits is 80000, while the sum is 39.

Adding to 150112145542521 its reverse (125245541211051), we get a palindrome (275357686753572).

The spelling of 150112145542521 in words is "one hundred fifty trillion, one hundred twelve billion, one hundred forty-five million, five hundred forty-two thousand, five hundred twenty-one".