1641404627633 has 4 divisors (see below), whose sum is σ = 1650892515828. Its totient is φ = 1631916739440.

The previous prime is 1641404627623. The next prime is 1641404627671. The reversal of 1641404627633 is 3367264041461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1153267653409 + 488136974224 = 1073903^2 + 698668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1641404627633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641404627623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4743943838 + ... + 4743944183.

It is an arithmetic number, because the mean of its divisors is an integer number (412723128957).

Almost surely, 2^{1641404627633} is an apocalyptic number.

It is an amenable number.

1641404627633 is a deficient number, since it is larger than the sum of its proper divisors (9487888195).

1641404627633 is an equidigital number, since it uses as much as digits as its factorization.

1641404627633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9487888194.

The product of its (nonzero) digits is 1741824, while the sum is 47.

The spelling of 1641404627633 in words is "one trillion, six hundred forty-one billion, four hundred four million, six hundred twenty-seven thousand, six hundred thirty-three".