13880723573 has 4 divisors (see below), whose sum is σ = 13903368108. Its totient is φ = 13858079040.

The previous prime is 13880723561. The next prime is 13880723609. The reversal of 13880723573 is 37532708831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4287892324 + 9592831249 = 65482^2 + 97943^2 .

It is a cyclic number.

It is not a de Polignac number, because 13880723573 - 2⁶ = 13880723509 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 (13880723503) 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, 11321348 + ... + 11322573.

It is an arithmetic number, because the mean of its divisors is an integer number (3475842027).

Almost surely, 2^13880723573 is an apocalyptic number.

It is an amenable number.

13880723573 is a deficient number, since it is larger than the sum of its proper divisors (22644535).

13880723573 is an equidigital number, since it uses as much as digits as its factorization.

13880723573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22644534.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 13880723573 in words is "thirteen billion, eight hundred eighty million, seven hundred twenty-three thousand, five hundred seventy-three".