13655444431 has 2 divisors, whose sum is σ = 13655444432. Its totient is φ = 13655444430.

The previous prime is 13655444377. The next prime is 13655444443. The reversal of 13655444431 is 13444455631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13655444431 is a prime.

It is a super-2 number, since 2×13655444431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13655442431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6827722215 + 6827722216.

It is an arithmetic number, because the mean of its divisors is an integer number (6827722216).

Almost surely, 2^13655444431 is an apocalyptic number.

13655444431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13655444431 is an equidigital number, since it uses as much as digits as its factorization.

13655444431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 40.

The spelling of 13655444431 in words is "thirteen billion, six hundred fifty-five million, four hundred forty-four thousand, four hundred thirty-one".