82990111111111 has 4 divisors (see below), whose sum is σ = 83236372568752. Its totient is φ = 82743849653472.

The previous prime is 82990111111087. The next prime is 82990111111133. The reversal of 82990111111111 is 11111111109928.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82990111111111 - 2³¹ = 82987963627463 is a prime.

It is a Duffinian number.

82990111111111 is a modest number, since divided by 11111111 gives 829901 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82990111111211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123130728315 + ... + 123130728988.

It is an arithmetic number, because the mean of its divisors is an integer number (20809093142188).

Almost surely, 2^{82990111111111} is an apocalyptic number.

82990111111111 is a deficient number, since it is larger than the sum of its proper divisors (246261457641).

82990111111111 is a wasteful number, since it uses less digits than its factorization.

82990111111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246261457640.

The product of its (nonzero) digits is 1296, while the sum is 37.

The spelling of 82990111111111 in words is "eighty-two trillion, nine hundred ninety billion, one hundred eleven million, one hundred eleven thousand, one hundred eleven".