13445156563547 has 4 divisors (see below), whose sum is σ = 13543296392616. Its totient is φ = 13347016734480.

The previous prime is 13445156563529. The next prime is 13445156563549. The reversal of 13445156563547 is 74536565154431.

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

It is a cyclic number.

It is not a de Polignac number, because 13445156563547 - 2²⁰ = 13445155514971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13445156563549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49069914329 + ... + 49069914602.

It is an arithmetic number, because the mean of its divisors is an integer number (3385824098154).

Almost surely, 2^{13445156563547} is an apocalyptic number.

13445156563547 is a deficient number, since it is larger than the sum of its proper divisors (98139829069).

13445156563547 is an equidigital number, since it uses as much as digits as its factorization.

13445156563547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98139829068.

The product of its digits is 90720000, while the sum is 59.

The spelling of 13445156563547 in words is "thirteen trillion, four hundred forty-five billion, one hundred fifty-six million, five hundred sixty-three thousand, five hundred forty-seven".