84621994458 has 64 divisors (see below), whose sum is σ = 178899840000. Its totient is φ = 26610729984.

The previous prime is 84621994361. The next prime is 84621994463. The reversal of 84621994458 is 85449912648.

It is a happy number.

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, 49806093 + ... + 49807791.

It is an arithmetic number, because the mean of its divisors is an integer number (2795310000).

Almost surely, 2^84621994458 is an apocalyptic number.

84621994458 is an abundant number, since it is smaller than the sum of its proper divisors (94277845542).

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

84621994458 is a wasteful number, since it uses less digits than its factorization.

84621994458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299.

The product of its digits is 19906560, while the sum is 60.

The spelling of 84621994458 in words is "eighty-four billion, six hundred twenty-one million, nine hundred ninety-four thousand, four hundred fifty-eight".