85549734551 has 2 divisors, whose sum is σ = 85549734552. Its totient is φ = 85549734550.

The previous prime is 85549734547. The next prime is 85549734577. The reversal of 85549734551 is 15543794558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85549734551 - 2² = 85549734547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85579734551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42774867275 + 42774867276.

It is an arithmetic number, because the mean of its divisors is an integer number (42774867276).

Almost surely, 2^85549734551 is an apocalyptic number.

85549734551 is a deficient number, since it is larger than the sum of its proper divisors (1).

85549734551 is an equidigital number, since it uses as much as digits as its factorization.

85549734551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120000, while the sum is 56.

The spelling of 85549734551 in words is "eighty-five billion, five hundred forty-nine million, seven hundred thirty-four thousand, five hundred fifty-one".