16431126541 has 2 divisors, whose sum is σ = 16431126542. Its totient is φ = 16431126540.

The previous prime is 16431126499. The next prime is 16431126553. The reversal of 16431126541 is 14562113461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8253722500 + 8177404041 = 90850^2 + 90429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16431126541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16431126497 and 16431126506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16431129541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8215563270 + 8215563271.

It is an arithmetic number, because the mean of its divisors is an integer number (8215563271).

Almost surely, 2^16431126541 is an apocalyptic number.

It is an amenable number.

16431126541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16431126541 is an equidigital number, since it uses as much as digits as its factorization.

16431126541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The spelling of 16431126541 in words is "sixteen billion, four hundred thirty-one million, one hundred twenty-six thousand, five hundred forty-one".