150221055939 has 4 divisors (see below), whose sum is σ = 200294741256. Its totient is φ = 100147370624.

The previous prime is 150221055899. The next prime is 150221055949. The reversal of 150221055939 is 939550122051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939550122051 = 3 ⋅313183374017.

It is a cyclic number.

It is not a de Polignac number, because 150221055939 - 2⁷ = 150221055811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 150221055939.

It is not an unprimeable number, because it can be changed into a prime (150221055949) 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, 25036842654 + ... + 25036842659.

It is an arithmetic number, because the mean of its divisors is an integer number (50073685314).

Almost surely, 2^150221055939 is an apocalyptic number.

150221055939 is a deficient number, since it is larger than the sum of its proper divisors (50073685317).

150221055939 is an equidigital number, since it uses as much as digits as its factorization.

150221055939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50073685316.

The product of its (nonzero) digits is 121500, while the sum is 42.

The spelling of 150221055939 in words is "one hundred fifty billion, two hundred twenty-one million, fifty-five thousand, nine hundred thirty-nine".