13457723669 has 6 divisors (see below), whose sum is σ = 14572564866. Its totient is φ = 12422514000.

The previous prime is 13457723663. The next prime is 13457723677. The reversal of 13457723669 is 96632775431.

It can be written as a sum of positive squares in 3 ways, for example, as 445758769 + 13011964900 = 21113^2 + 114070^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13457723669 is a prime.

It is a super-2 number, since 2×13457723669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13457723669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13457723663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39815582 + ... + 39815919.

It is an arithmetic number, because the mean of its divisors is an integer number (2428760811).

Almost surely, 2^13457723669 is an apocalyptic number.

It is an amenable number.

13457723669 is a deficient number, since it is larger than the sum of its proper divisors (1114841197).

13457723669 is an equidigital number, since it uses as much as digits as its factorization.

13457723669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79631527 (or 79631514 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 53.

The spelling of 13457723669 in words is "thirteen billion, four hundred fifty-seven million, seven hundred twenty-three thousand, six hundred sixty-nine".