85775780805081 has 8 divisors (see below), whose sum is σ = 114407738450784. Its totient is φ = 57163838514720.

The previous prime is 85775780805023. The next prime is 85775780805089. The reversal of 85775780805081 is 18050808757758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85775780805081 - 2¹⁵ = 85775780772313 is a prime.

It is a super-2 number, since 2×85775780805081² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85775780804997 and 85775780805015.

It is not an unprimeable number, because it can be changed into a prime (85775780805089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5003828835 + ... + 5003845976.

It is an arithmetic number, because the mean of its divisors is an integer number (14300967306348).

Almost surely, 2^{85775780805081} is an apocalyptic number.

It is an amenable number.

85775780805081 is a deficient number, since it is larger than the sum of its proper divisors (28631957645703).

85775780805081 is a wasteful number, since it uses less digits than its factorization.

85775780805081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10007677671.

The product of its (nonzero) digits is 175616000, while the sum is 69.

The spelling of 85775780805081 in words is "eighty-five trillion, seven hundred seventy-five billion, seven hundred eighty million, eight hundred five thousand, eighty-one".