5120641556423 has 2 divisors, whose sum is σ = 5120641556424. Its totient is φ = 5120641556422.

The previous prime is 5120641556399. The next prime is 5120641556431. The reversal of 5120641556423 is 3246551460215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5120641556423 - 2¹⁰ = 5120641555399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5020641556423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560320778211 + 2560320778212.

It is an arithmetic number, because the mean of its divisors is an integer number (2560320778212).

Almost surely, 2^{5120641556423} is an apocalyptic number.

5120641556423 is a deficient number, since it is larger than the sum of its proper divisors (1).

5120641556423 is an equidigital number, since it uses as much as digits as its factorization.

5120641556423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 5120641556423 in words is "five trillion, one hundred twenty billion, six hundred forty-one million, five hundred fifty-six thousand, four hundred twenty-three".