12920541791 has 2 divisors, whose sum is σ = 12920541792. Its totient is φ = 12920541790.

The previous prime is 12920541763. The next prime is 12920541797. The reversal of 12920541791 is 19714502921.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12920541791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12920541797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6460270895 + 6460270896.

It is an arithmetic number, because the mean of its divisors is an integer number (6460270896).

Almost surely, 2^12920541791 is an apocalyptic number.

12920541791 is a deficient number, since it is larger than the sum of its proper divisors (1).

12920541791 is an equidigital number, since it uses as much as digits as its factorization.

12920541791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 12920541791 in words is "twelve billion, nine hundred twenty million, five hundred forty-one thousand, seven hundred ninety-one".