13476763921 has 2 divisors, whose sum is σ = 13476763922. Its totient is φ = 13476763920.

The previous prime is 13476763903. The next prime is 13476763939. The reversal of 13476763921 is 12936767431.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (13476763903) and next prime (13476763939).

It can be written as a sum of positive squares in only one way, i.e., 13442083600 + 34680321 = 115940^2 + 5889^2 .

It is a cyclic number.

It is not a de Polignac number, because 13476763921 - 2¹¹ = 13476761873 is a prime.

It is not a weakly prime, because it can be changed into another prime (13476763901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6738381960 + 6738381961.

It is an arithmetic number, because the mean of its divisors is an integer number (6738381961).

Almost surely, 2^13476763921 is an apocalyptic number.

It is an amenable number.

13476763921 is a deficient number, since it is larger than the sum of its proper divisors (1).

13476763921 is an equidigital number, since it uses as much as digits as its factorization.

13476763921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 49.

The spelling of 13476763921 in words is "thirteen billion, four hundred seventy-six million, seven hundred sixty-three thousand, nine hundred twenty-one".