84188690506 has 16 divisors (see below), whose sum is σ = 126830559240. Its totient is φ = 41911902720.

The previous prime is 84188690447. The next prime is 84188690539. The reversal of 84188690506 is 60509688148.

It can be written as a sum of positive squares in 4 ways, for example, as 62654595481 + 21534095025 = 250309^2 + 146745^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3278790 + ... + 3304366.

Almost surely, 2^84188690506 is an apocalyptic number.

84188690506 is a deficient number, since it is larger than the sum of its proper divisors (42641868734).

84188690506 is a wasteful number, since it uses less digits than its factorization.

84188690506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32649.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 84188690506 in words is "eighty-four billion, one hundred eighty-eight million, six hundred ninety thousand, five hundred six".