13978909106529 has 16 divisors (see below), whose sum is σ = 19336501128000. Its totient is φ = 8972136484416.

The previous prime is 13978909106521. The next prime is 13978909106531. The reversal of 13978909106529 is 92560190987931.

It is not a de Polignac number, because 13978909106529 - 2³ = 13978909106521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13978909106521) 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, 230166079 + ... + 230226804.

It is an arithmetic number, because the mean of its divisors is an integer number (1208531320500).

Almost surely, 2^{13978909106529} is an apocalyptic number.

It is an amenable number.

13978909106529 is a deficient number, since it is larger than the sum of its proper divisors (5357592021471).

13978909106529 is a wasteful number, since it uses less digits than its factorization.

13978909106529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460393264.

The product of its (nonzero) digits is 66134880, while the sum is 69.

The spelling of 13978909106529 in words is "thirteen trillion, nine hundred seventy-eight billion, nine hundred nine million, one hundred six thousand, five hundred twenty-nine".