84108776238653 has 8 divisors (see below), whose sum is σ = 84382782452472. Its totient is φ = 83835162867456.

The previous prime is 84108776238589. The next prime is 84108776238659. The reversal of 84108776238653 is 35683267780148.

It can be written as a sum of positive squares in 4 ways, for example, as 13396200246724 + 70712575991929 = 3660082^2 + 8409077^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 84108776238653 - 2⁶ = 84108776238589 is a prime.

It is a super-2 number, since 2×84108776238653² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84108776238659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97781750 + ... + 98638167.

It is an arithmetic number, because the mean of its divisors is an integer number (10547847806559).

Almost surely, 2^{84108776238653} is an apocalyptic number.

It is an amenable number.

84108776238653 is a deficient number, since it is larger than the sum of its proper divisors (274006213819).

84108776238653 is a wasteful number, since it uses less digits than its factorization.

84108776238653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196421311.

The product of its (nonzero) digits is 325140480, while the sum is 68.

The spelling of 84108776238653 in words is "eighty-four trillion, one hundred eight billion, seven hundred seventy-six million, two hundred thirty-eight thousand, six hundred fifty-three".