84155084311 has 4 divisors (see below), whose sum is σ = 87056983800. Its totient is φ = 81253184824.

The previous prime is 84155084291. The next prime is 84155084327. The reversal of 84155084311 is 11348055148.

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 84155084311 - 2¹⁹ = 84154560023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84155084381) 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, 1450949701 + ... + 1450949758.

It is an arithmetic number, because the mean of its divisors is an integer number (21764245950).

Almost surely, 2^84155084311 is an apocalyptic number.

84155084311 is a deficient number, since it is larger than the sum of its proper divisors (2901899489).

84155084311 is a wasteful number, since it uses less digits than its factorization.

84155084311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901899488.

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 84155084311 in words is "eighty-four billion, one hundred fifty-five million, eighty-four thousand, three hundred eleven".