20340502334153 has 4 divisors (see below), whose sum is σ = 20425609038720. Its totient is φ = 20255395629588.

The previous prime is 20340502334093. The next prime is 20340502334171. The reversal of 20340502334153 is 35143320504302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20340502334153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20340502334653) 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, 42553351925 + ... + 42553352402.

It is an arithmetic number, because the mean of its divisors is an integer number (5106402259680).

Almost surely, 2^{20340502334153} is an apocalyptic number.

It is an amenable number.

20340502334153 is a deficient number, since it is larger than the sum of its proper divisors (85106704567).

20340502334153 is an equidigital number, since it uses as much as digits as its factorization.

20340502334153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85106704566.

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

Adding to 20340502334153 its reverse (35143320504302), we get a palindrome (55483822838455).

The spelling of 20340502334153 in words is "twenty trillion, three hundred forty billion, five hundred two million, three hundred thirty-four thousand, one hundred fifty-three".