13771400047 has 4 divisors (see below), whose sum is σ = 13773651640. Its totient is φ = 13769148456.

The previous prime is 13771400033. The next prime is 13771400057. The reversal of 13771400047 is 74000417731.

It is a happy number.

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 13771400047 - 2⁷ = 13771399919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13771399985 and 13771400021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13771400057) 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, 1116597 + ... + 1128862.

It is an arithmetic number, because the mean of its divisors is an integer number (3443412910).

Almost surely, 2^13771400047 is an apocalyptic number.

13771400047 is a deficient number, since it is larger than the sum of its proper divisors (2251593).

13771400047 is an equidigital number, since it uses as much as digits as its factorization.

13771400047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251592.

The product of its (nonzero) digits is 16464, while the sum is 34.

Adding to 13771400047 its reverse (74000417731), we get a palindrome (87771817778).

The spelling of 13771400047 in words is "thirteen billion, seven hundred seventy-one million, four hundred thousand, forty-seven".