13980068477 has 4 divisors (see below), whose sum is σ = 13989853020. Its totient is φ = 13970283936.

The previous prime is 13980068461. The next prime is 13980068489. The reversal of 13980068477 is 77486008931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77486008931 = 2003 ⋅38684977.

It can be written as a sum of positive squares in 2 ways, for example, as 4135261636 + 9844806841 = 64306^2 + 99221^2 .

It is a cyclic number.

It is not a de Polignac number, because 13980068477 - 2⁴ = 13980068461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13980068437) 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, 4890128 + ... + 4892985.

It is an arithmetic number, because the mean of its divisors is an integer number (3497463255).

Almost surely, 2^13980068477 is an apocalyptic number.

It is an amenable number.

13980068477 is a deficient number, since it is larger than the sum of its proper divisors (9784543).

13980068477 is an equidigital number, since it uses as much as digits as its factorization.

13980068477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9784542.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 13980068477 in words is "thirteen billion, nine hundred eighty million, sixty-eight thousand, four hundred seventy-seven".