20351632432543 has 8 divisors (see below), whose sum is σ = 20824986755408. Its totient is φ = 19878280861824.

The previous prime is 20351632432511. The next prime is 20351632432559. The reversal of 20351632432543 is 34523423615302.

It is a happy number.

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 20351632432543 - 2⁵ = 20351632432511 is a prime.

It is a super-2 number, since 2×20351632432543² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

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 20351632432543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20351630432543) 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, 28874455 + ... + 29570887.

It is an arithmetic number, because the mean of its divisors is an integer number (2603123344426).

Almost surely, 2^{20351632432543} is an apocalyptic number.

20351632432543 is a deficient number, since it is larger than the sum of its proper divisors (473354322865).

20351632432543 is an equidigital number, since it uses as much as digits as its factorization.

20351632432543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376073.

The product of its (nonzero) digits is 1555200, while the sum is 43.

The spelling of 20351632432543 in words is "twenty trillion, three hundred fifty-one billion, six hundred thirty-two million, four hundred thirty-two thousand, five hundred forty-three".