85001775049 has 2 divisors, whose sum is σ = 85001775050. Its totient is φ = 85001775048.

The previous prime is 85001775031. The next prime is 85001775059. The reversal of 85001775049 is 94057710058.

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., 58508353225 + 26493421824 = 241885^2 + 162768^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85001775049 is a prime.

It is a super-2 number, since 2×85001775049² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85001775059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42500887524 + 42500887525.

It is an arithmetic number, because the mean of its divisors is an integer number (42500887525).

Almost surely, 2^85001775049 is an apocalyptic number.

It is an amenable number.

85001775049 is a deficient number, since it is larger than the sum of its proper divisors (1).

85001775049 is an equidigital number, since it uses as much as digits as its factorization.

85001775049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 46.

The spelling of 85001775049 in words is "eighty-five billion, one million, seven hundred seventy-five thousand, forty-nine".