13278129064 has 32 divisors (see below), whose sum is σ = 25709725440. Its totient is φ = 6422371200.

The previous prime is 13278129047. The next prime is 13278129091. The reversal of 13278129064 is 46092187231.

It is a super-2 number, since 2×13278129064² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13278129064.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723279 + ... + 741409.

It is an arithmetic number, because the mean of its divisors is an integer number (803428920).

Almost surely, 2^13278129064 is an apocalyptic number.

It is an amenable number.

13278129064 is a deficient number, since it is larger than the sum of its proper divisors (12431596376).

13278129064 is a wasteful number, since it uses less digits than its factorization.

13278129064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21121 (or 21117 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 13278129064 in words is "thirteen billion, two hundred seventy-eight million, one hundred twenty-nine thousand, sixty-four".