85553006779 has 2 divisors, whose sum is σ = 85553006780. Its totient is φ = 85553006778.

The previous prime is 85553006761. The next prime is 85553006837. The reversal of 85553006779 is 97760035558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85553006779 - 2¹¹ = 85553004731 is a prime.

It is not a weakly prime, because it can be changed into another prime (85553006479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42776503389 + 42776503390.

It is an arithmetic number, because the mean of its divisors is an integer number (42776503390).

Almost surely, 2^85553006779 is an apocalyptic number.

85553006779 is a deficient number, since it is larger than the sum of its proper divisors (1).

85553006779 is an equidigital number, since it uses as much as digits as its factorization.

85553006779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938000, while the sum is 55.

The spelling of 85553006779 in words is "eighty-five billion, five hundred fifty-three million, six thousand, seven hundred seventy-nine".