20248687173 has 24 divisors (see below), whose sum is σ = 31892508000. Its totient is φ = 11327933760.

The previous prime is 20248687127. The next prime is 20248687181. The reversal of 20248687173 is 37178684202.

It is not a de Polignac number, because 20248687173 - 2¹⁰ = 20248686149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20248687183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1809798 + ... + 1820951.

It is an arithmetic number, because the mean of its divisors is an integer number (1328854500).

Almost surely, 2^20248687173 is an apocalyptic number.

It is an amenable number.

20248687173 is a deficient number, since it is larger than the sum of its proper divisors (11643820827).

20248687173 is a wasteful number, since it uses less digits than its factorization.

20248687173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630789 (or 3630776 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 20248687173 in words is "twenty billion, two hundred forty-eight million, six hundred eighty-seven thousand, one hundred seventy-three".