85554777077 has 16 divisors (see below), whose sum is σ = 106944233472. Its totient is φ = 66491974320.

The previous prime is 85554777071. The next prime is 85554777103. The reversal of 85554777077 is 77077745558.

It is a cyclic number.

It is not a de Polignac number, because 85554777077 - 2⁶ = 85554777013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85554777071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1421033 + ... + 1480014.

It is an arithmetic number, because the mean of its divisors is an integer number (6684014592).

Almost surely, 2^85554777077 is an apocalyptic number.

It is an amenable number.

85554777077 is a deficient number, since it is larger than the sum of its proper divisors (21389456395).

85554777077 is a wasteful number, since it uses less digits than its factorization.

85554777077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901448.

The product of its (nonzero) digits is 67228000, while the sum is 62.

The spelling of 85554777077 in words is "eighty-five billion, five hundred fifty-four million, seven hundred seventy-seven thousand, seventy-seven".