84843890310861 has 12 divisors (see below), whose sum is σ = 133693402914240. Its totient is φ = 51420539582280.

The previous prime is 84843890310797. The next prime is 84843890310937. The reversal of 84843890310861 is 16801309834848.

84843890310861 is a `hidden beast` number, since 8 + 4 + 8 + 438 + 90 + 3 + 108 + 6 + 1 = 666.

It is not a de Polignac number, because 84843890310861 - 2⁶ = 84843890310797 is a prime.

It is a super-2 number, since 2×84843890310861² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84843890310161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428504496421 + ... + 428504496618.

It is an arithmetic number, because the mean of its divisors is an integer number (11141116909520).

Almost surely, 2^{84843890310861} is an apocalyptic number.

It is an amenable number.

84843890310861 is a deficient number, since it is larger than the sum of its proper divisors (48849512603379).

84843890310861 is a wasteful number, since it uses less digits than its factorization.

84843890310861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857008993056 (or 857008993053 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 63.

The spelling of 84843890310861 in words is "eighty-four trillion, eight hundred forty-three billion, eight hundred ninety million, three hundred ten thousand, eight hundred sixty-one".