12720970541 has 2 divisors, whose sum is σ = 12720970542. Its totient is φ = 12720970540.

The previous prime is 12720970499. The next prime is 12720970547. The reversal of 12720970541 is 14507902721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9222721225 + 3498249316 = 96035^2 + 59146^2 .

It is a cyclic number.

It is not a de Polignac number, because 12720970541 - 2¹⁰ = 12720969517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12720970495 and 12720970504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12720970547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360485270 + 6360485271.

It is an arithmetic number, because the mean of its divisors is an integer number (6360485271).

Almost surely, 2^12720970541 is an apocalyptic number.

It is an amenable number.

12720970541 is a deficient number, since it is larger than the sum of its proper divisors (1).

12720970541 is an equidigital number, since it uses as much as digits as its factorization.

12720970541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 12720970541 in words is "twelve billion, seven hundred twenty million, nine hundred seventy thousand, five hundred forty-one".