20345032403135 has 16 divisors (see below), whose sum is σ = 27252880617600. Its totient is φ = 14452285172640.

The previous prime is 20345032403089. The next prime is 20345032403231. The reversal of 20345032403135 is 53130423054302.

It is not a de Polignac number, because 20345032403135 - 2¹⁰ = 20345032402111 is a prime.

It is a super-2 number, since 2×20345032403135² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20345032403095 and 20345032403104.

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, 4301272985 + ... + 4301277714.

It is an arithmetic number, because the mean of its divisors is an integer number (1703305038600).

Almost surely, 2^{20345032403135} is an apocalyptic number.

20345032403135 is a deficient number, since it is larger than the sum of its proper divisors (6907848214465).

20345032403135 is a wasteful number, since it uses less digits than its factorization.

20345032403135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8602550758.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 20345032403135 its reverse (53130423054302), we get a palindrome (73475455457437).

The spelling of 20345032403135 in words is "twenty trillion, three hundred forty-five billion, thirty-two million, four hundred three thousand, one hundred thirty-five".