5279401904561 has 2 divisors, whose sum is σ = 5279401904562. Its totient is φ = 5279401904560.

The previous prime is 5279401904479. The next prime is 5279401904563. The reversal of 5279401904561 is 1654091049725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2732326350625 + 2547075553936 = 1652975^2 + 1595956^2 .

It is a cyclic number.

It is not a de Polignac number, because 5279401904561 - 2¹⁴ = 5279401888177 is a prime.

Together with 5279401904563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5279401904563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639700952280 + 2639700952281.

It is an arithmetic number, because the mean of its divisors is an integer number (2639700952281).

Almost surely, 2^{5279401904561} is an apocalyptic number.

It is an amenable number.

5279401904561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5279401904561 is an equidigital number, since it uses as much as digits as its factorization.

5279401904561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 5279401904561 in words is "five trillion, two hundred seventy-nine billion, four hundred one million, nine hundred four thousand, five hundred sixty-one".