320551042502 has 4 divisors (see below), whose sum is σ = 480826563756. Its totient is φ = 160275521250.

The previous prime is 320551042459. The next prime is 320551042517. The reversal of 320551042502 is 205240155023.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80137760624 + ... + 80137760627.

It is an arithmetic number, because the mean of its divisors is an integer number (120206640939).

Almost surely, 2^320551042502 is an apocalyptic number.

320551042502 is a deficient number, since it is larger than the sum of its proper divisors (160275521254).

320551042502 is a wasteful number, since it uses less digits than its factorization.

320551042502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160275521253.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 320551042502 its reverse (205240155023), we get a palindrome (525791197525).

The spelling of 320551042502 in words is "three hundred twenty billion, five hundred fifty-one million, forty-two thousand, five hundred two".