505455650406 has 48 divisors (see below), whose sum is σ = 1325228265504. Its totient is φ = 135920846592.

The previous prime is 505455650353. The next prime is 505455650429. The reversal of 505455650406 is 604056554505.

505455650406 is a `hidden beast` number, since 5 + 0 + 5 + 4 + 556 + 50 + 40 + 6 = 666.

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, 117984705 + ... + 117988988.

It is an arithmetic number, because the mean of its divisors is an integer number (27608922198).

Almost surely, 2^505455650406 is an apocalyptic number.

505455650406 is an abundant number, since it is smaller than the sum of its proper divisors (819772615098).

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

505455650406 is a wasteful number, since it uses less digits than its factorization.

505455650406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235973725 (or 235973722 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

The spelling of 505455650406 in words is "five hundred five billion, four hundred fifty-five million, six hundred fifty thousand, four hundred six".