20452359085 has 4 divisors (see below), whose sum is σ = 24542830908. Its totient is φ = 16361887264.

The previous prime is 20452359077. The next prime is 20452359113. The reversal of 20452359085 is 58095325402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58095325402 = 2 ⋅29047662701.

It can be written as a sum of positive squares in 2 ways, for example, as 5318930761 + 15133428324 = 72931^2 + 123018^2 .

It is a cyclic number.

It is not a de Polignac number, because 20452359085 - 2³ = 20452359077 is a prime.

It is a Duffinian number.

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, 2045235904 + ... + 2045235913.

It is an arithmetic number, because the mean of its divisors is an integer number (6135707727).

Almost surely, 2^20452359085 is an apocalyptic number.

It is an amenable number.

20452359085 is a deficient number, since it is larger than the sum of its proper divisors (4090471823).

20452359085 is an equidigital number, since it uses as much as digits as its factorization.

20452359085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090471822.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 20452359085 in words is "twenty billion, four hundred fifty-two million, three hundred fifty-nine thousand, eighty-five".