84188690545 has 16 divisors (see below), whose sum is σ = 103186960128. Its totient is φ = 65910904960.

The previous prime is 84188690543. The next prime is 84188690549. The reversal of 84188690545 is 54509688148.

It is a happy number.

It is not a de Polignac number, because 84188690545 - 2¹ = 84188690543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84188690545.

It is not an unprimeable number, because it can be changed into a prime (84188690543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3799950 + ... + 3822040.

It is an arithmetic number, because the mean of its divisors is an integer number (6449185008).

Almost surely, 2^84188690545 is an apocalyptic number.

It is an amenable number.

84188690545 is a deficient number, since it is larger than the sum of its proper divisors (18998269583).

84188690545 is a wasteful number, since it uses less digits than its factorization.

84188690545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38360.

The product of its (nonzero) digits is 11059200, while the sum is 58.

The spelling of 84188690545 in words is "eighty-four billion, one hundred eighty-eight million, six hundred ninety thousand, five hundred forty-five".