1600265208961 has 8 divisors (see below), whose sum is σ = 1643705360360. Its totient is φ = 1556835043968.

The previous prime is 1600265208953. The next prime is 1600265208973. The reversal of 1600265208961 is 1698025620061.

It can be written as a sum of positive squares in 4 ways, for example, as 672636180736 + 927629028225 = 820144^2 + 963135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1600265208961 - 2³ = 1600265208953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1600265208931) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2171196 + ... + 2813293.

It is an arithmetic number, because the mean of its divisors is an integer number (205463170045).

Almost surely, 2^{1600265208961} is an apocalyptic number.

It is an amenable number.

1600265208961 is a deficient number, since it is larger than the sum of its proper divisors (43440151399).

1600265208961 is an equidigital number, since it uses as much as digits as its factorization.

1600265208961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993203.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 1600265208961 in words is "one trillion, six hundred billion, two hundred sixty-five million, two hundred eight thousand, nine hundred sixty-one".