13421553511 has 2 divisors, whose sum is σ = 13421553512. Its totient is φ = 13421553510.

The previous prime is 13421553503. The next prime is 13421553547. The reversal of 13421553511 is 11535512431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13421553511 - 2³ = 13421553503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13421553011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6710776755 + 6710776756.

It is an arithmetic number, because the mean of its divisors is an integer number (6710776756).

Almost surely, 2^13421553511 is an apocalyptic number.

13421553511 is a deficient number, since it is larger than the sum of its proper divisors (1).

13421553511 is an equidigital number, since it uses as much as digits as its factorization.

13421553511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 31.

The spelling of 13421553511 in words is "thirteen billion, four hundred twenty-one million, five hundred fifty-three thousand, five hundred eleven".