1641322305461 has 4 divisors (see below), whose sum is σ = 1641619598124. Its totient is φ = 1641025012800.

The previous prime is 1641322305437. The next prime is 1641322305503. The reversal of 1641322305461 is 1645032231461.

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 593808948100 + 1047513357361 = 770590^2 + 1023481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1641322305461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641322305421) 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, 148638050 + ... + 148649091.

It is an arithmetic number, because the mean of its divisors is an integer number (410404899531).

Almost surely, 2^{1641322305461} is an apocalyptic number.

It is an amenable number.

1641322305461 is a deficient number, since it is larger than the sum of its proper divisors (297292663).

1641322305461 is an equidigital number, since it uses as much as digits as its factorization.

1641322305461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297292662.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 1641322305461 in words is "one trillion, six hundred forty-one billion, three hundred twenty-two million, three hundred five thousand, four hundred sixty-one".