434677816566 has 48 divisors (see below), whose sum is σ = 1076680653984. Its totient is φ = 124154940672.

The previous prime is 434677816553. The next prime is 434677816591. The reversal of 434677816566 is 665618776434.

434677816566 is a `hidden beast` number, since 4 + 3 + 4 + 67 + 7 + 8 + 1 + 6 + 566 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130845 + ... + 941528.

It is an arithmetic number, because the mean of its divisors is an integer number (22430846958).

Almost surely, 2^434677816566 is an apocalyptic number.

434677816566 is an abundant number, since it is smaller than the sum of its proper divisors (642002837418).

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

434677816566 is a wasteful number, since it uses less digits than its factorization.

434677816566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075605 (or 1075602 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 63.

The spelling of 434677816566 in words is "four hundred thirty-four billion, six hundred seventy-seven million, eight hundred sixteen thousand, five hundred sixty-six".