85438735823603 has 2 divisors, whose sum is σ = 85438735823604. Its totient is φ = 85438735823602.

The previous prime is 85438735823599. The next prime is 85438735823621. The reversal of 85438735823603 is 30632853783458.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85438735823603 - 2² = 85438735823599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85438735823603.

It is not a weakly prime, because it can be changed into another prime (85438735826603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42719367911801 + 42719367911802.

It is an arithmetic number, because the mean of its divisors is an integer number (42719367911802).

Almost surely, 2^{85438735823603} is an apocalyptic number.

85438735823603 is a deficient number, since it is larger than the sum of its proper divisors (1).

85438735823603 is an equidigital number, since it uses as much as digits as its factorization.

85438735823603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 348364800, while the sum is 65.

The spelling of 85438735823603 in words is "eighty-five trillion, four hundred thirty-eight billion, seven hundred thirty-five million, eight hundred twenty-three thousand, six hundred three".