165648370474 has 16 divisors (see below), whose sum is σ = 249053301000. Its totient is φ = 82630658304.

The previous prime is 165648370421. The next prime is 165648370507. The reversal of 165648370474 is 474073846561.

It can be written as a sum of positive squares in 4 ways, for example, as 165602605249 + 45765225 = 406943^2 + 6765^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11700352 + ... + 11714500.

Almost surely, 2^165648370474 is an apocalyptic number.

165648370474 is a deficient number, since it is larger than the sum of its proper divisors (83404930526).

165648370474 is a wasteful number, since it uses less digits than its factorization.

165648370474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27417.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 165648370474 in words is "one hundred sixty-five billion, six hundred forty-eight million, three hundred seventy thousand, four hundred seventy-four".