13548864631 has 2 divisors, whose sum is σ = 13548864632. Its totient is φ = 13548864630.

The previous prime is 13548864611. The next prime is 13548864643. The reversal of 13548864631 is 13646884531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13548864631 - 2⁷ = 13548864503 is a prime.

It is a super-2 number, since 2×13548864631² (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 (13548864611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6774432315 + 6774432316.

It is an arithmetic number, because the mean of its divisors is an integer number (6774432316).

Almost surely, 2^13548864631 is an apocalyptic number.

13548864631 is a deficient number, since it is larger than the sum of its proper divisors (1).

13548864631 is an equidigital number, since it uses as much as digits as its factorization.

13548864631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 49.

The spelling of 13548864631 in words is "thirteen billion, five hundred forty-eight million, eight hundred sixty-four thousand, six hundred thirty-one".