13445988954431 has 4 divisors (see below), whose sum is σ = 14668351586664. Its totient is φ = 12223626322200.

The previous prime is 13445988954403. The next prime is 13445988954479.

13445988954431 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13445988954431 is a prime.

It is a super-2 number, since 2×13445988954431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13445988954031) 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 in 3 ways as a sum of consecutive naturals, for example, 611181316100 + ... + 611181316121.

It is an arithmetic number, because the mean of its divisors is an integer number (3667087896666).

Almost surely, 2^{13445988954431} is an apocalyptic number.

13445988954431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13445988954431 is a deficient number, since it is larger than the sum of its proper divisors (1222362632233).

13445988954431 is a wasteful number, since it uses less digits than its factorization.

13445988954431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222362632232.

The product of its digits is 298598400, while the sum is 68.

The spelling of 13445988954431 in words is "thirteen trillion, four hundred forty-five billion, nine hundred eighty-eight million, nine hundred fifty-four thousand, four hundred thirty-one".