84188690540 has 24 divisors (see below), whose sum is σ = 179435002992. Its totient is φ = 33172856640.

The previous prime is 84188690539. The next prime is 84188690543. The reversal of 84188690540 is 4509688148.

It is a happy number.

It is a super-2 number, since 2×84188690540² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 31412351 + ... + 31415030.

It is an arithmetic number, because the mean of its divisors is an integer number (7476458458).

Almost surely, 2^84188690540 is an apocalyptic number.

It is an amenable number.

84188690540 is an abundant number, since it is smaller than the sum of its proper divisors (95246312452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84188690540 is a wasteful number, since it uses less digits than its factorization.

84188690540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62827457 (or 62827455 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 84188690540 in words is "eighty-four billion, one hundred eighty-eight million, six hundred ninety thousand, five hundred forty".