13458668571645 has 64 divisors (see below), whose sum is σ = 25803014400000. Its totient is φ = 5913190736640.

The previous prime is 13458668571629. The next prime is 13458668571679. The reversal of 13458668571645 is 54617586685431.

It is not a de Polignac number, because 13458668571645 - 2⁴ = 13458668571629 is a prime.

It is a super-2 number, since 2×13458668571645² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 13458668571645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 93254770 + ... + 93398979.

It is an arithmetic number, because the mean of its divisors is an integer number (403172100000).

Almost surely, 2^{13458668571645} is an apocalyptic number.

13458668571645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13458668571645 is a deficient number, since it is larger than the sum of its proper divisors (12344345828355).

13458668571645 is a wasteful number, since it uses less digits than its factorization.

13458668571645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186653810.

The product of its digits is 580608000, while the sum is 69.

The spelling of 13458668571645 in words is "thirteen trillion, four hundred fifty-eight billion, six hundred sixty-eight million, five hundred seventy-one thousand, six hundred forty-five".