13728646970 has 16 divisors (see below), whose sum is σ = 24759004968. Its totient is φ = 5480916480.

The previous prime is 13728646957. The next prime is 13728646979. The reversal of 13728646970 is 7964682731.

It can be written as a sum of positive squares in 4 ways, for example, as 10188277969 + 3540369001 = 100937^2 + 59501^2 .

It is not an unprimeable number, because it can be changed into a prime (13728646979) 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, 1312319 + ... + 1322738.

Almost surely, 2^13728646970 is an apocalyptic number.

13728646970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13728646970 is a deficient number, since it is larger than the sum of its proper divisors (11030357998).

13728646970 is a wasteful number, since it uses less digits than its factorization.

13728646970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635585.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 13728646970 in words is "thirteen billion, seven hundred twenty-eight million, six hundred forty-six thousand, nine hundred seventy".