13276371421 has 2 divisors, whose sum is σ = 13276371422. Its totient is φ = 13276371420.

The previous prime is 13276371347. The next prime is 13276371431. The reversal of 13276371421 is 12417367231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10243666521 + 3032704900 = 101211^2 + 55070^2 .

It is a cyclic number.

It is not a de Polignac number, because 13276371421 - 2¹³ = 13276363229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13276371431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6638185710 + 6638185711.

It is an arithmetic number, because the mean of its divisors is an integer number (6638185711).

Almost surely, 2^13276371421 is an apocalyptic number.

It is an amenable number.

13276371421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13276371421 is an equidigital number, since it uses as much as digits as its factorization.

13276371421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The spelling of 13276371421 in words is "thirteen billion, two hundred seventy-six million, three hundred seventy-one thousand, four hundred twenty-one".