13603977139 has 4 divisors (see below), whose sum is σ = 13744224424. Its totient is φ = 13463729856.

The previous prime is 13603977131. The next prime is 13603977193. The reversal of 13603977139 is 93177930631.

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 13603977139 - 2³ = 13603977131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13603977092 and 13603977101.

It is not an unprimeable number, because it can be changed into a prime (13603977131) 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, 70123497 + ... + 70123690.

It is an arithmetic number, because the mean of its divisors is an integer number (3436056106).

Almost surely, 2^13603977139 is an apocalyptic number.

13603977139 is a deficient number, since it is larger than the sum of its proper divisors (140247285).

13603977139 is an equidigital number, since it uses as much as digits as its factorization.

13603977139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140247284.

The product of its (nonzero) digits is 642978, while the sum is 49.

The spelling of 13603977139 in words is "thirteen billion, six hundred three million, nine hundred seventy-seven thousand, one hundred thirty-nine".