10161521601643 has 16 divisors (see below), whose sum is σ = 10511468052480. Its totient is φ = 9817204846176.

The previous prime is 10161521601611. The next prime is 10161521601659. The reversal of 10161521601643 is 34610612516101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10161521601643 - 2⁵ = 10161521601611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10161521601683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16204005 + ... + 16819417.

It is an arithmetic number, because the mean of its divisors is an integer number (656966753280).

Almost surely, 2^{10161521601643} is an apocalyptic number.

10161521601643 is a deficient number, since it is larger than the sum of its proper divisors (349946450837).

10161521601643 is an equidigital number, since it uses as much as digits as its factorization.

10161521601643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619986.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 10161521601643 in words is "ten trillion, one hundred sixty-one billion, five hundred twenty-one million, six hundred one thousand, six hundred forty-three".