13440434403 has 32 divisors (see below), whose sum is σ = 19858673664. Its totient is φ = 8017380000.

The previous prime is 13440434401. The next prime is 13440434419. The reversal of 13440434403 is 30443404431.

It is not a de Polignac number, because 13440434403 - 2¹ = 13440434401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13440434401) 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, 1473888 + ... + 1482978.

It is an arithmetic number, because the mean of its divisors is an integer number (620583552).

Almost surely, 2^13440434403 is an apocalyptic number.

13440434403 is a deficient number, since it is larger than the sum of its proper divisors (6418239261).

13440434403 is a wasteful number, since it uses less digits than its factorization.

13440434403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9807.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 13440434403 its reverse (30443404431), we get a palindrome (43883838834).

The spelling of 13440434403 in words is "thirteen billion, four hundred forty million, four hundred thirty-four thousand, four hundred three".