13887076643 has 16 divisors (see below), whose sum is σ = 15819273216. Its totient is φ = 12067271040.

The previous prime is 13887076631. The next prime is 13887076703. The reversal of 13887076643 is 34667078831.

It is not a de Polignac number, because 13887076643 - 2¹⁴ = 13887060259 is a prime.

It is a super-2 number, since 2×13887076643² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13887076613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357755 + ... + 394667.

It is an arithmetic number, because the mean of its divisors is an integer number (988704576).

Almost surely, 2^13887076643 is an apocalyptic number.

13887076643 is a deficient number, since it is larger than the sum of its proper divisors (1932196573).

13887076643 is a wasteful number, since it uses less digits than its factorization.

13887076643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38434.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 13887076643 in words is "thirteen billion, eight hundred eighty-seven million, seventy-six thousand, six hundred forty-three".