13648391955 has 48 divisors (see below), whose sum is σ = 26049164544. Its totient is φ = 6555531840.

The previous prime is 13648391951. The next prime is 13648391957. The reversal of 13648391955 is 55919384631.

It is not a de Polignac number, because 13648391955 - 2² = 13648391951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13648391951) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75879 + ... + 181808.

It is an arithmetic number, because the mean of its divisors is an integer number (542690928).

Almost surely, 2^13648391955 is an apocalyptic number.

13648391955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13648391955 is a deficient number, since it is larger than the sum of its proper divisors (12400772589).

13648391955 is a wasteful number, since it uses less digits than its factorization.

13648391955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257816 (or 257813 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 13648391955 in words is "thirteen billion, six hundred forty-eight million, three hundred ninety-one thousand, nine hundred fifty-five".