165603158242 has 8 divisors (see below), whose sum is σ = 251397565776. Its totient is φ = 81803969652.

The previous prime is 165603158239. The next prime is 165603158263. The reversal of 165603158242 is 242851306561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498804528 + ... + 498804859.

It is an arithmetic number, because the mean of its divisors is an integer number (31424695722).

Almost surely, 2^165603158242 is an apocalyptic number.

165603158242 is a deficient number, since it is larger than the sum of its proper divisors (85794407534).

165603158242 is an equidigital number, since it uses as much as digits as its factorization.

165603158242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997609472.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 165603158242 in words is "one hundred sixty-five billion, six hundred three million, one hundred fifty-eight thousand, two hundred forty-two".