13453404491 has 2 divisors, whose sum is σ = 13453404492. Its totient is φ = 13453404490.

The previous prime is 13453404479. The next prime is 13453404509. The reversal of 13453404491 is 19440435431.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13453404491 - 2²⁶ = 13386295627 is a prime.

It is not a weakly prime, because it can be changed into another prime (13453404451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6726702245 + 6726702246.

It is an arithmetic number, because the mean of its divisors is an integer number (6726702246).

Almost surely, 2^13453404491 is an apocalyptic number.

13453404491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13453404491 is an equidigital number, since it uses as much as digits as its factorization.

13453404491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 13453404491 in words is "thirteen billion, four hundred fifty-three million, four hundred four thousand, four hundred ninety-one".