165214411220650 has 192 divisors, whose sum is σ = 351833242374144. Its totient is φ = 57176104896000.

The previous prime is 165214411220597. The next prime is 165214411220699. The reversal of 165214411220650 is 56022114412561.

165214411220650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×165214411220650³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 249605437 + ... + 250266463.

It is an arithmetic number, because the mean of its divisors is an integer number (1832464804032).

Almost surely, 2^{165214411220650} is an apocalyptic number.

165214411220650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165214411220650 is an abundant number, since it is smaller than the sum of its proper divisors (186618831153494).

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

165214411220650 is a wasteful number, since it uses less digits than its factorization.

165214411220650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661325 (or 661320 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 165214411220650 in words is "one hundred sixty-five trillion, two hundred fourteen billion, four hundred eleven million, two hundred twenty thousand, six hundred fifty".