20654457443 has 8 divisors (see below), whose sum is σ = 21028493376. Its totient is φ = 20281564800.

The previous prime is 20654457437. The next prime is 20654457457. The reversal of 20654457443 is 34475445602.

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 20654457443 - 2²⁸ = 20386021987 is a prime.

It is a super-2 number, since 2×20654457443² (a number of 21 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 = 20654457394 and 20654457403.

It is not an unprimeable number, because it can be changed into a prime (20654457413) 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, 249323 + ... + 321668.

It is an arithmetic number, because the mean of its divisors is an integer number (2628561672).

Almost surely, 2^20654457443 is an apocalyptic number.

20654457443 is a deficient number, since it is larger than the sum of its proper divisors (374035933).

20654457443 is an equidigital number, since it uses as much as digits as its factorization.

20654457443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571645.

The product of its (nonzero) digits is 1612800, while the sum is 44.

The spelling of 20654457443 in words is "twenty billion, six hundred fifty-four million, four hundred fifty-seven thousand, four hundred forty-three".