84112354678804 has 6 divisors (see below), whose sum is σ = 147196620687914. Its totient is φ = 42056177339400.

The previous prime is 84112354678787. The next prime is 84112354678871. The reversal of 84112354678804 is 40887645321148.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50535776757904 + 33576577920900 = 7108852^2 + 5794530^2 .

It is a super-2 number, since 2×84112354678804² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10514044334847 + ... + 10514044334854.

Almost surely, 2^{84112354678804} is an apocalyptic number.

It is an amenable number.

84112354678804 is a deficient number, since it is larger than the sum of its proper divisors (63084266009110).

84112354678804 is a wasteful number, since it uses less digits than its factorization.

84112354678804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21028088669705 (or 21028088669703 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 61.

The spelling of 84112354678804 in words is "eighty-four trillion, one hundred twelve billion, three hundred fifty-four million, six hundred seventy-eight thousand, eight hundred four".