150501675721 has 4 divisors (see below), whose sum is σ = 151126164244. Its totient is φ = 149877187200.

The previous prime is 150501675707. The next prime is 150501675749. The reversal of 150501675721 is 127576105051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 127576105051 = 1447 ⋅88165933.

It can be written as a sum of positive squares in 2 ways, for example, as 123074672400 + 27427003321 = 350820^2 + 165611^2 .

It is a cyclic number.

It is not a de Polignac number, because 150501675721 - 2¹⁵ = 150501642953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150501675221) 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, 312243900 + ... + 312244381.

It is an arithmetic number, because the mean of its divisors is an integer number (37781541061).

Almost surely, 2^150501675721 is an apocalyptic number.

It is an amenable number.

150501675721 is a deficient number, since it is larger than the sum of its proper divisors (624488523).

150501675721 is an equidigital number, since it uses as much as digits as its factorization.

150501675721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624488522.

The product of its (nonzero) digits is 73500, while the sum is 40.

The spelling of 150501675721 in words is "one hundred fifty billion, five hundred one million, six hundred seventy-five thousand, seven hundred twenty-one".