20401130535 has 16 divisors (see below), whose sum is σ = 33694771200. Its totient is φ = 10529615520.

The previous prime is 20401130513. The next prime is 20401130549. The reversal of 20401130535 is 53503110402.

It is not a de Polignac number, because 20401130535 - 2²³ = 20392741927 is a prime.

It is a super-2 number, since 2×20401130535² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21936235 + ... + 21937164.

It is an arithmetic number, because the mean of its divisors is an integer number (2105923200).

Almost surely, 2^20401130535 is an apocalyptic number.

20401130535 is a deficient number, since it is larger than the sum of its proper divisors (13293640665).

20401130535 is a wasteful number, since it uses less digits than its factorization.

20401130535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43873438.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 20401130535 its reverse (53503110402), we get a palindrome (73904240937).

The spelling of 20401130535 in words is "twenty billion, four hundred one million, one hundred thirty thousand, five hundred thirty-five".