13439399955 has 32 divisors (see below), whose sum is σ = 22230050304. Its totient is φ = 6928782336.

The previous prime is 13439399773. The next prime is 13439399957. The reversal of 13439399955 is 55999393431.

It is not a de Polignac number, because 13439399955 - 2¹² = 13439395859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13439399957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44839 + ... + 169968.

It is an arithmetic number, because the mean of its divisors is an integer number (694689072).

Almost surely, 2^13439399955 is an apocalyptic number.

13439399955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13439399955 is a deficient number, since it is larger than the sum of its proper divisors (8790650349).

13439399955 is a wasteful number, since it uses less digits than its factorization.

13439399955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214955.

The product of its digits is 17714700, while the sum is 60.

The spelling of 13439399955 in words is "thirteen billion, four hundred thirty-nine million, three hundred ninety-nine thousand, nine hundred fifty-five".