84353815821712 has 40 divisors (see below), whose sum is σ = 165505703484800. Its totient is φ = 41642675448192.

The previous prime is 84353815821707. The next prime is 84353815821719. The reversal of 84353815821712 is 21712851835348.

It is a super-2 number, since 2×84353815821712² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84353815821719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220337563 + ... + 220720069.

It is an arithmetic number, because the mean of its divisors is an integer number (4137642587120).

Almost surely, 2^{84353815821712} is an apocalyptic number.

It is an amenable number.

84353815821712 is a deficient number, since it is larger than the sum of its proper divisors (81151887663088).

84353815821712 is a wasteful number, since it uses less digits than its factorization.

84353815821712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557063 (or 557057 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 58.

The spelling of 84353815821712 in words is "eighty-four trillion, three hundred fifty-three billion, eight hundred fifteen million, eight hundred twenty-one thousand, seven hundred twelve".