20170270253 has 16 divisors (see below), whose sum is σ = 23150493696. Its totient is φ = 17214891120.

The previous prime is 20170270247. The next prime is 20170270277. The reversal of 20170270253 is 35207207102.

It is a de Polignac number, because none of the positive numbers 2^k-20170270253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20170270753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1685750 + ... + 1697672.

It is an arithmetic number, because the mean of its divisors is an integer number (1446905856).

Almost surely, 2^20170270253 is an apocalyptic number.

It is an amenable number.

20170270253 is a deficient number, since it is larger than the sum of its proper divisors (2980223443).

20170270253 is a wasteful number, since it uses less digits than its factorization.

20170270253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12944.

The product of its (nonzero) digits is 5880, while the sum is 29.

Adding to 20170270253 its reverse (35207207102), we get a palindrome (55377477355).

The spelling of 20170270253 in words is "twenty billion, one hundred seventy million, two hundred seventy thousand, two hundred fifty-three".