85530751457 has 2 divisors, whose sum is σ = 85530751458. Its totient is φ = 85530751456.

The previous prime is 85530751421. The next prime is 85530751489. The reversal of 85530751457 is 75415703558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82417223056 + 3113528401 = 287084^2 + 55799^2 .

It is a cyclic number.

It is not a de Polignac number, because 85530751457 - 2²² = 85526557153 is a prime.

It is not a weakly prime, because it can be changed into another prime (85530751357) 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, 42765375728 + 42765375729.

It is an arithmetic number, because the mean of its divisors is an integer number (42765375729).

Almost surely, 2^85530751457 is an apocalyptic number.

It is an amenable number.

85530751457 is a deficient number, since it is larger than the sum of its proper divisors (1).

85530751457 is an equidigital number, since it uses as much as digits as its factorization.

85530751457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940000, while the sum is 50.

The spelling of 85530751457 in words is "eighty-five billion, five hundred thirty million, seven hundred fifty-one thousand, four hundred fifty-seven".