20081273258 has 4 divisors (see below), whose sum is σ = 30121909890. Its totient is φ = 10040636628.

The previous prime is 20081273249. The next prime is 20081273263. The reversal of 20081273258 is 85237218002.

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

It can be written as a sum of positive squares in only one way, i.e., 10420938889 + 9660334369 = 102083^2 + 98287^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5020318313 + ... + 5020318316.

Almost surely, 2^20081273258 is an apocalyptic number.

20081273258 is a deficient number, since it is larger than the sum of its proper divisors (10040636632).

20081273258 is a wasteful number, since it uses less digits than its factorization.

20081273258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10040636631.

The product of its (nonzero) digits is 53760, while the sum is 38.

The spelling of 20081273258 in words is "twenty billion, eighty-one million, two hundred seventy-three thousand, two hundred fifty-eight".