160621203145666 has 32 divisors (see below), whose sum is σ = 249940113857280. Its totient is φ = 77357606601600.

The previous prime is 160621203145567. The next prime is 160621203145691. The reversal of 160621203145666 is 666541302126061.

It is a super-3 number, since 3×160621203145666³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217531921 + ... + 218269051.

It is an arithmetic number, because the mean of its divisors is an integer number (7810628558040).

Almost surely, 2^{160621203145666} is an apocalyptic number.

160621203145666 is a deficient number, since it is larger than the sum of its proper divisors (89318910711614).

160621203145666 is a wasteful number, since it uses less digits than its factorization.

160621203145666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770890.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 160621203145666 in words is "one hundred sixty trillion, six hundred twenty-one billion, two hundred three million, one hundred forty-five thousand, six hundred sixty-six".