20402243046501 has 32 divisors (see below), whose sum is σ = 28143854113536. Its totient is φ = 13137681600000.

The previous prime is 20402243046481. The next prime is 20402243046587. The reversal of 20402243046501 is 10564034220402.

It is not a de Polignac number, because 20402243046501 - 2⁷ = 20402243046373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402243042501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 358213576 + ... + 358270526.

It is an arithmetic number, because the mean of its divisors is an integer number (879495441048).

Almost surely, 2^{20402243046501} is an apocalyptic number.

It is an amenable number.

20402243046501 is a deficient number, since it is larger than the sum of its proper divisors (7741611067035).

20402243046501 is a wasteful number, since it uses less digits than its factorization.

20402243046501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85933.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 20402243046501 its reverse (10564034220402), we get a palindrome (30966277266903).

The spelling of 20402243046501 in words is "twenty trillion, four hundred two billion, two hundred forty-three million, forty-six thousand, five hundred one".