20590424135 has 4 divisors (see below), whose sum is σ = 24708508968. Its totient is φ = 16472339304.

The previous prime is 20590424119. The next prime is 20590424233. The reversal of 20590424135 is 53142409502.

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 20590424135 - 2⁴ = 20590424119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20590424095 and 20590424104.

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, 2059042409 + ... + 2059042418.

It is an arithmetic number, because the mean of its divisors is an integer number (6177127242).

Almost surely, 2^20590424135 is an apocalyptic number.

20590424135 is a deficient number, since it is larger than the sum of its proper divisors (4118084833).

20590424135 is an equidigital number, since it uses as much as digits as its factorization.

20590424135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4118084832.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 20590424135 in words is "twenty billion, five hundred ninety million, four hundred twenty-four thousand, one hundred thirty-five".