13276654638 has 16 divisors (see below), whose sum is σ = 28595871696. Its totient is φ = 4085124480.

The previous prime is 13276654637. The next prime is 13276654649. The reversal of 13276654638 is 83645667231.

It is a super-2 number, since 2×13276654638² (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 (13276654637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85106683 + ... + 85106838.

It is an arithmetic number, because the mean of its divisors is an integer number (1787241981).

Almost surely, 2^13276654638 is an apocalyptic number.

13276654638 is an abundant number, since it is smaller than the sum of its proper divisors (15319217058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13276654638 is a wasteful number, since it uses less digits than its factorization.

13276654638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170213539.

The product of its digits is 4354560, while the sum is 51.

The spelling of 13276654638 in words is "thirteen billion, two hundred seventy-six million, six hundred fifty-four thousand, six hundred thirty-eight".