85555577753 has 2 divisors, whose sum is σ = 85555577754. Its totient is φ = 85555577752.

The previous prime is 85555577693. The next prime is 85555577837. The reversal of 85555577753 is 35777555558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44065146889 + 41490430864 = 209917^2 + 203692^2 .

It is a cyclic number.

It is not a de Polignac number, because 85555577753 - 2⁶ = 85555577689 is a prime.

It is not a weakly prime, because it can be changed into another prime (85555577053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42777788876 + 42777788877.

It is an arithmetic number, because the mean of its divisors is an integer number (42777788877).

Almost surely, 2^85555577753 is an apocalyptic number.

It is an amenable number.

85555577753 is a deficient number, since it is larger than the sum of its proper divisors (1).

85555577753 is an equidigital number, since it uses as much as digits as its factorization.

85555577753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 128625000, while the sum is 62.

The spelling of 85555577753 in words is "eighty-five billion, five hundred fifty-five million, five hundred seventy-seven thousand, seven hundred fifty-three".