150320247257 has 4 divisors (see below), whose sum is σ = 150335625636. Its totient is φ = 150304868880.

The previous prime is 150320247241. The next prime is 150320247271. The reversal of 150320247257 is 752742023051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80824215616 + 69496031641 = 284296^2 + 263621^2 .

It is a cyclic number.

It is not a de Polignac number, because 150320247257 - 2⁴ = 150320247241 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 150320247257.

It is not an unprimeable number, because it can be changed into a prime (150320247227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7674518 + ... + 7694079.

It is an arithmetic number, because the mean of its divisors is an integer number (37583906409).

Almost surely, 2^150320247257 is an apocalyptic number.

It is an amenable number.

150320247257 is a deficient number, since it is larger than the sum of its proper divisors (15378379).

150320247257 is an equidigital number, since it uses as much as digits as its factorization.

150320247257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15378378.

The product of its (nonzero) digits is 117600, while the sum is 38.

The spelling of 150320247257 in words is "one hundred fifty billion, three hundred twenty million, two hundred forty-seven thousand, two hundred fifty-seven".