20424132323651 has 4 divisors (see below), whose sum is σ = 23341865512752. Its totient is φ = 17506399134552.

The previous prime is 20424132323591. The next prime is 20424132323659. The reversal of 20424132323651 is 15632323142402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20424132323651 - 2⁶ = 20424132323587 is a prime.

It is a super-2 number, since 2×20424132323651² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20424132323659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1458866594540 + ... + 1458866594553.

It is an arithmetic number, because the mean of its divisors is an integer number (5835466378188).

Almost surely, 2^{20424132323651} is an apocalyptic number.

20424132323651 is a deficient number, since it is larger than the sum of its proper divisors (2917733189101).

20424132323651 is an equidigital number, since it uses as much as digits as its factorization.

20424132323651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917733189100.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 20424132323651 in words is "twenty trillion, four hundred twenty-four billion, one hundred thirty-two million, three hundred twenty-three thousand, six hundred fifty-one".