84819266369 has 4 divisors (see below), whose sum is σ = 85642754496. Its totient is φ = 83995778244.

The previous prime is 84819266351. The next prime is 84819266431. The reversal of 84819266369 is 96366291848.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84819266369 is a prime.

It is a super-2 number, since 2×84819266369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84819266339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411743909 + ... + 411744114.

It is an arithmetic number, because the mean of its divisors is an integer number (21410688624).

Almost surely, 2^84819266369 is an apocalyptic number.

It is an amenable number.

84819266369 is a deficient number, since it is larger than the sum of its proper divisors (823488127).

84819266369 is a wasteful number, since it uses less digits than its factorization.

84819266369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823488126.

The product of its digits is 26873856, while the sum is 62.

The spelling of 84819266369 in words is "eighty-four billion, eight hundred nineteen million, two hundred sixty-six thousand, three hundred sixty-nine".