406656506460 has 24 divisors (see below), whose sum is σ = 1138638218256. Its totient is φ = 108441735040.

The previous prime is 406656506453. The next prime is 406656506491. The reversal of 406656506460 is 64605656604.

It is a happy number.

It is a congruent number.

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, 3388804161 + ... + 3388804280.

It is an arithmetic number, because the mean of its divisors is an integer number (47443259094).

Almost surely, 2^406656506460 is an apocalyptic number.

It is an amenable number.

406656506460 is an abundant number, since it is smaller than the sum of its proper divisors (731981711796).

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

406656506460 is a wasteful number, since it uses less digits than its factorization.

406656506460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777608453 (or 6777608451 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 406656506460 in words is "four hundred six billion, six hundred fifty-six million, five hundred six thousand, four hundred sixty".