20535311353501 has 8 divisors (see below), whose sum is σ = 23469949566144. Its totient is φ = 17600928717120.

The previous prime is 20535311353493. The next prime is 20535311353507. The reversal of 20535311353501 is 10535311353502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20535311353501 - 2³ = 20535311353493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535311353507) 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, 63721855 + ... + 64043308.

It is an arithmetic number, because the mean of its divisors is an integer number (2933743695768).

Almost surely, 2^{20535311353501} is an apocalyptic number.

It is an amenable number.

20535311353501 is a deficient number, since it is larger than the sum of its proper divisors (2934638212643).

20535311353501 is a wasteful number, since it uses less digits than its factorization.

20535311353501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127788131.

The product of its (nonzero) digits is 101250, while the sum is 37.

Subtracting from 20535311353501 its reverse (10535311353502), we obtain a palindrome (9999999999999).

The spelling of 20535311353501 in words is "twenty trillion, five hundred thirty-five billion, three hundred eleven million, three hundred fifty-three thousand, five hundred one".