84820088111721 has 16 divisors (see below), whose sum is σ = 113675955047424. Its totient is φ = 56256025432064.

The previous prime is 84820088111719. The next prime is 84820088111729. The reversal of 84820088111721 is 12711188002848.

It is a cyclic number.

It is not a de Polignac number, because 84820088111721 - 2¹ = 84820088111719 is a prime.

It is a super-2 number, since 2×84820088111721² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84820088111729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68402505 + ... + 69631478.

It is an arithmetic number, because the mean of its divisors is an integer number (7104747190464).

Almost surely, 2^{84820088111721} is an apocalyptic number.

It is an amenable number.

84820088111721 is a deficient number, since it is larger than the sum of its proper divisors (28855866935703).

84820088111721 is a wasteful number, since it uses less digits than its factorization.

84820088111721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138035040.

The product of its (nonzero) digits is 458752, while the sum is 51.

The spelling of 84820088111721 in words is "eighty-four trillion, eight hundred twenty billion, eighty-eight million, one hundred eleven thousand, seven hundred twenty-one".