13319457645 has 32 divisors (see below), whose sum is σ = 23273720064. Its totient is φ = 6464908800.

The previous prime is 13319457643. The next prime is 13319457649. The reversal of 13319457645 is 54675491331.

It is not a de Polignac number, because 13319457645 - 2¹ = 13319457643 is a prime.

It is a super-3 number, since 3×13319457645³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13319457594 and 13319457603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13319457643) 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, 467176 + ... + 494865.

It is an arithmetic number, because the mean of its divisors is an integer number (727303752).

Almost surely, 2^13319457645 is an apocalyptic number.

13319457645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13319457645 is a deficient number, since it is larger than the sum of its proper divisors (9954262419).

13319457645 is a wasteful number, since it uses less digits than its factorization.

13319457645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962133.

The product of its digits is 1360800, while the sum is 48.

The spelling of 13319457645 in words is "thirteen billion, three hundred nineteen million, four hundred fifty-seven thousand, six hundred forty-five".