84661834212936 has 128 divisors (see below), whose sum is σ = 238354580534400. Its totient is φ = 27840861941760.

The previous prime is 84661834212919. The next prime is 84661834212973. The reversal of 84661834212936 is 63921243816648.

84661834212936 is a `hidden beast` number, since 8 + 4 + 6 + 6 + 183 + 421 + 29 + 3 + 6 = 666.

It is a super-2 number, since 2×84661834212936² (a number of 29 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2029825 + ... + 13169808.

It is an arithmetic number, because the mean of its divisors is an integer number (1862145160425).

Almost surely, 2^{84661834212936} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84661834212936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119177290267200).

84661834212936 is an abundant number, since it is smaller than the sum of its proper divisors (153692746321464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84661834212936 is a wasteful number, since it uses less digits than its factorization.

84661834212936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15199996 (or 15199986 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 63.

The spelling of 84661834212936 in words is "eighty-four trillion, six hundred sixty-one billion, eight hundred thirty-four million, two hundred twelve thousand, nine hundred thirty-six".