165662164251644 has 12 divisors (see below), whose sum is σ = 289947509115264. Its totient is φ = 82820018790144.

The previous prime is 165662164251611. The next prime is 165662164251713. The reversal of 165662164251644 is 446152461266561.

It is a congruent number.

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, 2765800229 + ... + 2765860124.

It is an arithmetic number, because the mean of its divisors is an integer number (24162292426272).

Almost surely, 2^{165662164251644} is an apocalyptic number.

It is an amenable number.

165662164251644 is a deficient number, since it is larger than the sum of its proper divisors (124285344863620).

165662164251644 is a wasteful number, since it uses less digits than its factorization.

165662164251644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5531667844 (or 5531667842 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 59.

The spelling of 165662164251644 in words is "one hundred sixty-five trillion, six hundred sixty-two billion, one hundred sixty-four million, two hundred fifty-one thousand, six hundred forty-four".