20471366253 has 32 divisors (see below), whose sum is σ = 30319301376. Its totient is φ = 12204476928.

The previous prime is 20471366219. The next prime is 20471366273. The reversal of 20471366253 is 35266317402.

It is not a de Polignac number, because 20471366253 - 2¹⁸ = 20471104109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20471366203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305776 + ... + 366662.

It is an arithmetic number, because the mean of its divisors is an integer number (947478168).

Almost surely, 2^20471366253 is an apocalyptic number.

It is an amenable number.

20471366253 is a deficient number, since it is larger than the sum of its proper divisors (9847935123).

20471366253 is a wasteful number, since it uses less digits than its factorization.

20471366253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61173.

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 20471366253 in words is "twenty billion, four hundred seventy-one million, three hundred sixty-six thousand, two hundred fifty-three".