487818629251866 has 80 divisors (see below), whose sum is σ = 1192479446568960. Its totient is φ = 147819623526720.

The previous prime is 487818629251831. The next prime is 487818629251981. The reversal of 487818629251866 is 668152926818784.

487818629251866 is a `hidden beast` number, since 4 + 8 + 7 + 8 + 1 + 8 + 6 + 2 + 92 + 518 + 6 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 59078230 + ... + 66827198.

It is an arithmetic number, because the mean of its divisors is an integer number (14905993082112).

Almost surely, 2^{487818629251866} is an apocalyptic number.

487818629251866 is an abundant number, since it is smaller than the sum of its proper divisors (704660817317094).

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

487818629251866 is a wasteful number, since it uses less digits than its factorization.

487818629251866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7784321 (or 7784312 counting only the distinct ones).

The product of its digits is 4459069440, while the sum is 81.

The spelling of 487818629251866 in words is "four hundred eighty-seven trillion, eight hundred eighteen billion, six hundred twenty-nine million, two hundred fifty-one thousand, eight hundred sixty-six".