20344662231653 has 8 divisors (see below), whose sum is σ = 21230989107648. Its totient is φ = 19458483384384.

The previous prime is 20344662231613. The next prime is 20344662231689. The reversal of 20344662231653 is 35613226644302.

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 20344662231653 - 2²⁸ = 20344393796197 is a prime.

It is a super-2 number, since 2×20344662231653² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20344662231598 and 20344662231607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344662231613) 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, 36726275 + ... + 37276112.

It is an arithmetic number, because the mean of its divisors is an integer number (2653873638456).

Almost surely, 2^{20344662231653} is an apocalyptic number.

20344662231653 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20344662231653 is a deficient number, since it is larger than the sum of its proper divisors (886326875995).

20344662231653 is a wasteful number, since it uses less digits than its factorization.

20344662231653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74014363.

The product of its (nonzero) digits is 3732480, while the sum is 47.

Adding to 20344662231653 its reverse (35613226644302), we get a palindrome (55957888875955).

The spelling of 20344662231653 in words is "twenty trillion, three hundred forty-four billion, six hundred sixty-two million, two hundred thirty-one thousand, six hundred fifty-three".