13620254023644 has 192 divisors, whose sum is σ = 33269822745600. Its totient is φ = 4332938987520.

The previous prime is 13620254023619. The next prime is 13620254023721. The reversal of 13620254023644 is 44632045202631.

It is a happy number.

It is a super-2 number, since 2×13620254023644² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13620254023596 and 13620254023605.

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, 3967447752 + ... + 3967451184.

It is an arithmetic number, because the mean of its divisors is an integer number (173280326800).

Almost surely, 2^{13620254023644} is an apocalyptic number.

It is an amenable number.

13620254023644 is an abundant number, since it is smaller than the sum of its proper divisors (19649568721956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13620254023644 is a wasteful number, since it uses less digits than its factorization.

13620254023644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300 (or 4298 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

The spelling of 13620254023644 in words is "thirteen trillion, six hundred twenty billion, two hundred fifty-four million, twenty-three thousand, six hundred forty-four".