84181417772 has 6 divisors (see below), whose sum is σ = 147317481108. Its totient is φ = 42090708884.

The previous prime is 84181417753. The next prime is 84181417777. The reversal of 84181417772 is 27771418148.

It is a super-2 number, since 2×84181417772² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84181417772.

It is not an unprimeable number, because it can be changed into a prime (84181417777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10522677218 + ... + 10522677225.

It is an arithmetic number, because the mean of its divisors is an integer number (24552913518).

Almost surely, 2^84181417772 is an apocalyptic number.

It is an amenable number.

84181417772 is a deficient number, since it is larger than the sum of its proper divisors (63136063336).

84181417772 is a wasteful number, since it uses less digits than its factorization.

84181417772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21045354447 (or 21045354445 counting only the distinct ones).

The product of its digits is 702464, while the sum is 50.

The spelling of 84181417772 in words is "eighty-four billion, one hundred eighty-one million, four hundred seventeen thousand, seven hundred seventy-two".