13645204723 has 8 divisors (see below), whose sum is σ = 13805996400. Its totient is φ = 13484579328.

The previous prime is 13645204697. The next prime is 13645204753. The reversal of 13645204723 is 32740254631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13645204723 - 2¹³ = 13645196531 is a prime.

It is a super-2 number, since 2×13645204723² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13645204753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127540 + ... + 208702.

It is an arithmetic number, because the mean of its divisors is an integer number (1725749550).

Almost surely, 2^13645204723 is an apocalyptic number.

13645204723 is a deficient number, since it is larger than the sum of its proper divisors (160791677).

13645204723 is an equidigital number, since it uses as much as digits as its factorization.

13645204723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83141.

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 13645204723 in words is "thirteen billion, six hundred forty-five million, two hundred four thousand, seven hundred twenty-three".