20135037345023 has 4 divisors (see below), whose sum is σ = 20829348977640. Its totient is φ = 19440725712408.

The previous prime is 20135037344999. The next prime is 20135037345113. The reversal of 20135037345023 is 32054373053102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20135037345023 - 2⁸ = 20135037344767 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 (20135037345623) 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, 347155816265 + ... + 347155816322.

It is an arithmetic number, because the mean of its divisors is an integer number (5207337244410).

Almost surely, 2^{20135037345023} is an apocalyptic number.

20135037345023 is a deficient number, since it is larger than the sum of its proper divisors (694311632617).

20135037345023 is an equidigital number, since it uses as much as digits as its factorization.

20135037345023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694311632616.

The product of its (nonzero) digits is 226800, while the sum is 38.

The spelling of 20135037345023 in words is "twenty trillion, one hundred thirty-five billion, thirty-seven million, three hundred forty-five thousand, twenty-three".