84827247813 has 80 divisors (see below), whose sum is σ = 158268464640. Its totient is φ = 43987082400.

The previous prime is 84827247787. The next prime is 84827247847. The reversal of 84827247813 is 31874272848.

84827247813 is a `hidden beast` number, since 84 + 82 + 7 + 2 + 478 + 13 = 666.

It is not a de Polignac number, because 84827247813 - 2¹² = 84827243717 is a prime.

It is a super-2 number, since 2×84827247813² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84827247813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84827247613) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3549418 + ... + 3573236.

It is an arithmetic number, because the mean of its divisors is an integer number (1978355808).

Almost surely, 2^84827247813 is an apocalyptic number.

It is an amenable number.

84827247813 is a deficient number, since it is larger than the sum of its proper divisors (73441216827).

84827247813 is a wasteful number, since it uses less digits than its factorization.

84827247813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24420 (or 24411 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 54.

The spelling of 84827247813 in words is "eighty-four billion, eight hundred twenty-seven million, two hundred forty-seven thousand, eight hundred thirteen".