20342456135 has 4 divisors (see below), whose sum is σ = 24410947368. Its totient is φ = 16273964904.

The previous prime is 20342456119. The next prime is 20342456143. The reversal of 20342456135 is 53165424302.

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

It is a cyclic number.

It is not a de Polignac number, because 20342456135 - 2⁴ = 20342456119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20342456095 and 20342456104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2034245609 + ... + 2034245618.

It is an arithmetic number, because the mean of its divisors is an integer number (6102736842).

Almost surely, 2^20342456135 is an apocalyptic number.

20342456135 is a deficient number, since it is larger than the sum of its proper divisors (4068491233).

20342456135 is an equidigital number, since it uses as much as digits as its factorization.

20342456135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068491232.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 20342456135 in words is "twenty billion, three hundred forty-two million, four hundred fifty-six thousand, one hundred thirty-five".