433421205401561 has 12 divisors (see below), whose sum is σ = 471340195022268. Its totient is φ = 398364026321664.

The previous prime is 433421205401551. The next prime is 433421205401603. The reversal of 433421205401561 is 165104502124334.

It can be written as a sum of positive squares in 6 ways, for example, as 106005968646400 + 327415236755161 = 10295920^2 + 18094619^2 .

It is a de Polignac number, because none of the positive numbers 2^k-433421205401561 is a prime.

It is a super-2 number, since 2×433421205401561² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (433421205401551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5503442420 + ... + 5503521173.

It is an arithmetic number, because the mean of its divisors is an integer number (39278349585189).

Almost surely, 2^{433421205401561} is an apocalyptic number.

It is an amenable number.

433421205401561 is a deficient number, since it is larger than the sum of its proper divisors (37918989620707).

433421205401561 is a wasteful number, since it uses less digits than its factorization.

433421205401561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11006963852 (or 11006963839 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

Adding to 433421205401561 its reverse (165104502124334), we get a palindrome (598525707525895).

The spelling of 433421205401561 in words is "four hundred thirty-three trillion, four hundred twenty-one billion, two hundred five million, four hundred one thousand, five hundred sixty-one".