13450856261 has 2 divisors, whose sum is σ = 13450856262. Its totient is φ = 13450856260.

The previous prime is 13450856239. The next prime is 13450856269. The reversal of 13450856261 is 16265805431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9723143236 + 3727713025 = 98606^2 + 61055^2 .

It is a cyclic number.

It is not a de Polignac number, because 13450856261 - 2¹⁰ = 13450855237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13450856269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6725428130 + 6725428131.

It is an arithmetic number, because the mean of its divisors is an integer number (6725428131).

Almost surely, 2^13450856261 is an apocalyptic number.

It is an amenable number.

13450856261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13450856261 is an equidigital number, since it uses as much as digits as its factorization.

13450856261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 13450856261 in words is "thirteen billion, four hundred fifty million, eight hundred fifty-six thousand, two hundred sixty-one".