84535611121 has 4 divisors (see below), whose sum is σ = 91038350452. Its totient is φ = 78032871792.

The previous prime is 84535610993. The next prime is 84535611217. The reversal of 84535611121 is 12111653548.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57082766400 + 27452844721 = 238920^2 + 165689^2 .

It is a cyclic number.

It is not a de Polignac number, because 84535611121 - 2⁷ = 84535610993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84535611821) 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, 3251369646 + ... + 3251369671.

It is an arithmetic number, because the mean of its divisors is an integer number (22759587613).

Almost surely, 2^84535611121 is an apocalyptic number.

It is an amenable number.

84535611121 is a deficient number, since it is larger than the sum of its proper divisors (6502739331).

84535611121 is a wasteful number, since it uses less digits than its factorization.

84535611121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6502739330.

The product of its digits is 28800, while the sum is 37.

The spelling of 84535611121 in words is "eighty-four billion, five hundred thirty-five million, six hundred eleven thousand, one hundred twenty-one".