20599442485 has 16 divisors (see below), whose sum is σ = 24931670400. Its totient is φ = 16338506176.

The previous prime is 20599442471. The next prime is 20599442491. The reversal of 20599442485 is 58424499502.

It is a cyclic number.

It is not a de Polignac number, because 20599442485 - 2²⁷ = 20465224757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293106 + ... + 356524.

It is an arithmetic number, because the mean of its divisors is an integer number (1558229400).

Almost surely, 2^20599442485 is an apocalyptic number.

It is an amenable number.

20599442485 is a deficient number, since it is larger than the sum of its proper divisors (4332227915).

20599442485 is a wasteful number, since it uses less digits than its factorization.

20599442485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63980.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 20599442485 in words is "twenty billion, five hundred ninety-nine million, four hundred forty-two thousand, four hundred eighty-five".