85470930877 has 2 divisors, whose sum is σ = 85470930878. Its totient is φ = 85470930876.

The previous prime is 85470930863. The next prime is 85470930901. The reversal of 85470930877 is 77803907458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50092706596 + 35378224281 = 223814^2 + 188091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85470930877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85470930977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42735465438 + 42735465439.

It is an arithmetic number, because the mean of its divisors is an integer number (42735465439).

Almost surely, 2^85470930877 is an apocalyptic number.

It is an amenable number.

85470930877 is a deficient number, since it is larger than the sum of its proper divisors (1).

85470930877 is an equidigital number, since it uses as much as digits as its factorization.

85470930877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11854080, while the sum is 58.

The spelling of 85470930877 in words is "eighty-five billion, four hundred seventy million, nine hundred thirty thousand, eight hundred seventy-seven".