85800151649 has 2 divisors, whose sum is σ = 85800151650. Its totient is φ = 85800151648.

The previous prime is 85800151571. The next prime is 85800151687. The reversal of 85800151649 is 94615100858.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64837455424 + 20962696225 = 254632^2 + 144785^2 .

It is a cyclic number.

It is not a de Polignac number, because 85800151649 - 2³⁶ = 17080674913 is a prime.

It is not a weakly prime, because it can be changed into another prime (85800151249) 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 as a sum of consecutive naturals, namely, 42900075824 + 42900075825.

It is an arithmetic number, because the mean of its divisors is an integer number (42900075825).

Almost surely, 2^85800151649 is an apocalyptic number.

It is an amenable number.

85800151649 is a deficient number, since it is larger than the sum of its proper divisors (1).

85800151649 is an equidigital number, since it uses as much as digits as its factorization.

85800151649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 47.

The spelling of 85800151649 in words is "eighty-five billion, eight hundred million, one hundred fifty-one thousand, six hundred forty-nine".