13887156547 has 16 divisors (see below), whose sum is σ = 15582365568. Its totient is φ = 12267118080.

The previous prime is 13887156541. The next prime is 13887156559. The reversal of 13887156547 is 74565178831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13887156547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13887156541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15228 + ... + 167350.

It is an arithmetic number, because the mean of its divisors is an integer number (973897848).

Almost surely, 2^13887156547 is an apocalyptic number.

13887156547 is a deficient number, since it is larger than the sum of its proper divisors (1695209021).

13887156547 is a wasteful number, since it uses less digits than its factorization.

13887156547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152370.

The product of its digits is 5644800, while the sum is 55.

The spelling of 13887156547 in words is "thirteen billion, eight hundred eighty-seven million, one hundred fifty-six thousand, five hundred forty-seven".