87819442853 has 2 divisors, whose sum is σ = 87819442854. Its totient is φ = 87819442852.

The previous prime is 87819442829. The next prime is 87819442859. The reversal of 87819442853 is 35824491878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87700676449 + 118766404 = 296143^2 + 10898^2 .

It is a cyclic number.

It is not a de Polignac number, because 87819442853 - 2⁸ = 87819442597 is a prime.

It is a super-2 number, since 2×87819442853² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87819442792 and 87819442801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87819442859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43909721426 + 43909721427.

It is an arithmetic number, because the mean of its divisors is an integer number (43909721427).

Almost surely, 2^87819442853 is an apocalyptic number.

It is an amenable number.

87819442853 is a deficient number, since it is larger than the sum of its proper divisors (1).

87819442853 is an equidigital number, since it uses as much as digits as its factorization.

87819442853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15482880, while the sum is 59.

The spelling of 87819442853 in words is "eighty-seven billion, eight hundred nineteen million, four hundred forty-two thousand, eight hundred fifty-three".