817849190481 has 16 divisors (see below), whose sum is σ = 1125672150528. Its totient is φ = 527630457600.

The previous prime is 817849190449. The next prime is 817849190491. The reversal of 817849190481 is 184091948718.

817849190481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 817849190481 - 2⁵ = 817849190449 is a prime.

It is a super-2 number, since 2×817849190481² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (817849190491) 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, 4207225 + ... + 4397321.

It is an arithmetic number, because the mean of its divisors is an integer number (70354509408).

Almost surely, 2^817849190481 is an apocalyptic number.

It is an amenable number.

817849190481 is a deficient number, since it is larger than the sum of its proper divisors (307822960047).

817849190481 is a wasteful number, since it uses less digits than its factorization.

817849190481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236392.

The product of its (nonzero) digits is 4644864, while the sum is 60.

The spelling of 817849190481 in words is "eight hundred seventeen billion, eight hundred forty-nine million, one hundred ninety thousand, four hundred eighty-one".