1001650561166 has 4 divisors (see below), whose sum is σ = 1502475841752. Its totient is φ = 500825280582.

The previous prime is 1001650561139. The next prime is 1001650561187. The reversal of 1001650561166 is 6611650561001.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250412640290 + ... + 250412640293.

It is an arithmetic number, because the mean of its divisors is an integer number (375618960438).

Almost surely, 2^{1001650561166} is an apocalyptic number.

1001650561166 is a deficient number, since it is larger than the sum of its proper divisors (500825280586).

1001650561166 is an equidigital number, since it uses as much as digits as its factorization.

1001650561166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500825280585.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 1001650561166 in words is "one trillion, one billion, six hundred fifty million, five hundred sixty-one thousand, one hundred sixty-six".