20848170493 has 2 divisors, whose sum is σ = 20848170494. Its totient is φ = 20848170492.

The previous prime is 20848170487. The next prime is 20848170583. The reversal of 20848170493 is 39407184802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13486873689 + 7361296804 = 116133^2 + 85798^2 .

It is a cyclic number.

It is not a de Polignac number, because 20848170493 - 2¹³ = 20848162301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20848170403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10424085246 + 10424085247.

It is an arithmetic number, because the mean of its divisors is an integer number (10424085247).

Almost surely, 2^20848170493 is an apocalyptic number.

It is an amenable number.

20848170493 is a deficient number, since it is larger than the sum of its proper divisors (1).

20848170493 is an equidigital number, since it uses as much as digits as its factorization.

20848170493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 20848170493 in words is "twenty billion, eight hundred forty-eight million, one hundred seventy thousand, four hundred ninety-three".