13557855671 has 2 divisors, whose sum is σ = 13557855672. Its totient is φ = 13557855670.

The previous prime is 13557855629. The next prime is 13557855677. The reversal of 13557855671 is 17655875531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13557855671 - 2⁶ = 13557855607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13557855677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6778927835 + 6778927836.

It is an arithmetic number, because the mean of its divisors is an integer number (6778927836).

Almost surely, 2^13557855671 is an apocalyptic number.

13557855671 is a deficient number, since it is larger than the sum of its proper divisors (1).

13557855671 is an equidigital number, since it uses as much as digits as its factorization.

13557855671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4410000, while the sum is 53.

The spelling of 13557855671 in words is "thirteen billion, five hundred fifty-seven million, eight hundred fifty-five thousand, six hundred seventy-one".