1601640252266 has 32 divisors (see below), whose sum is σ = 2434112704128. Its totient is φ = 790319462400.

The previous prime is 1601640252221. The next prime is 1601640252281. The reversal of 1601640252266 is 6622520461061.

It is a super-2 number, since 2×1601640252266² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102654866 + ... + 102670466.

It is an arithmetic number, because the mean of its divisors is an integer number (76066022004).

Almost surely, 2^{1601640252266} is an apocalyptic number.

1601640252266 is a deficient number, since it is larger than the sum of its proper divisors (832472451862).

1601640252266 is a wasteful number, since it uses less digits than its factorization.

1601640252266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17166.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 1601640252266 in words is "one trillion, six hundred one billion, six hundred forty million, two hundred fifty-two thousand, two hundred sixty-six".