165214651501600 has 36 divisors (see below), whose sum is σ = 403330267980234. Its totient is φ = 66085860600320.

The previous prime is 165214651501597. The next prime is 165214651501633. The reversal of 165214651501600 is 6105156412561.

It can be written as a sum of positive squares in 3 ways, for example, as 108640846840464 + 56573804661136 = 10423092^2 + 7521556^2 .

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 5 ways as a sum of consecutive naturals, for example, 103259156389 + ... + 103259157988.

Almost surely, 2^{165214651501600} is an apocalyptic number.

165214651501600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165214651501600 is an abundant number, since it is smaller than the sum of its proper divisors (238115616478634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165214651501600 is a wasteful number, since it uses less digits than its factorization.

165214651501600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206518314397 (or 206518314384 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 165214651501600 in words is "one hundred sixty-five trillion, two hundred fourteen billion, six hundred fifty-one million, five hundred one thousand, six hundred".