13257506445 has 32 divisors (see below), whose sum is σ = 21801104640. Its totient is φ = 6874583040.

The previous prime is 13257506413. The next prime is 13257506459. The reversal of 13257506445 is 54460575231.

It is not a de Polignac number, because 13257506445 - 2⁵ = 13257506413 is a prime.

It is a super-2 number, since 2×13257506445² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13257506397 and 13257506406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 830701 + ... + 846509.

It is an arithmetic number, because the mean of its divisors is an integer number (681284520).

Almost surely, 2^13257506445 is an apocalyptic number.

13257506445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13257506445 is a deficient number, since it is larger than the sum of its proper divisors (8543598195).

13257506445 is a wasteful number, since it uses less digits than its factorization.

13257506445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17365.

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 13257506445 in words is "thirteen billion, two hundred fifty-seven million, five hundred six thousand, four hundred forty-five".