13271856278 has 4 divisors (see below), whose sum is σ = 19907784420. Its totient is φ = 6635928138.

The previous prime is 13271856271. The next prime is 13271856329. The reversal of 13271856278 is 87265817231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87265817231 = 19 ⋅4592937749.

It is a super-2 number, since 2×13271856278² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13271856271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3317964068 + ... + 3317964071.

It is an arithmetic number, because the mean of its divisors is an integer number (4976946105).

Almost surely, 2^13271856278 is an apocalyptic number.

13271856278 is a deficient number, since it is larger than the sum of its proper divisors (6635928142).

13271856278 is an equidigital number, since it uses as much as digits as its factorization.

13271856278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6635928141.

The product of its digits is 1128960, while the sum is 50.

The spelling of 13271856278 in words is "thirteen billion, two hundred seventy-one million, eight hundred fifty-six thousand, two hundred seventy-eight".