165253355642 has 16 divisors (see below), whose sum is σ = 268564963392. Its totient is φ = 75957766080.

The previous prime is 165253355567. The next prime is 165253355717. The reversal of 165253355642 is 246553352561.

It is an interprime number because it is at equal distance from previous prime (165253355567) and next prime (165253355717).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56514734 + ... + 56517657.

It is an arithmetic number, because the mean of its divisors is an integer number (16785310212).

Almost surely, 2^165253355642 is an apocalyptic number.

165253355642 is a deficient number, since it is larger than the sum of its proper divisors (103311607750).

165253355642 is a wasteful number, since it uses less digits than its factorization.

165253355642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113032453.

The product of its digits is 3240000, while the sum is 47.

The spelling of 165253355642 in words is "one hundred sixty-five billion, two hundred fifty-three million, three hundred fifty-five thousand, six hundred forty-two".