84119721156 has 189 divisors, whose sum is σ = 227967964189. Its totient is φ = 27147182400.

The previous prime is 84119721137. The next prime is 84119721157. The reversal of 84119721156 is 65112791148.

The square root of 84119721156 is 290034.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4053359556 + 80066361600 = 63666^2 + 282960^2 .

It is a super-2 number, since 2×84119721156² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84119721157) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 642135211 + ... + 642135341.

Almost surely, 2^84119721156 is an apocalyptic number.

84119721156 is the 290034-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84119721156

84119721156 is an abundant number, since it is smaller than the sum of its proper divisors (143848243033).

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

84119721156 is an equidigital number, since it uses as much as digits as its factorization.

84119721156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 177 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The spelling of 84119721156 in words is "eighty-four billion, one hundred nineteen million, seven hundred twenty-one thousand, one hundred fifty-six".