406561315425016 has 8 divisors (see below), whose sum is σ = 762302466421920. Its totient is φ = 203280657712504.

The previous prime is 406561315424977. The next prime is 406561315425017. The reversal of 406561315425016 is 610524513165604.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406561315425017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25410082214056 + ... + 25410082214071.

It is an arithmetic number, because the mean of its divisors is an integer number (95287808302740).

Almost surely, 2^{406561315425016} is an apocalyptic number.

It is an amenable number.

406561315425016 is a deficient number, since it is larger than the sum of its proper divisors (355741150996904).

406561315425016 is a wasteful number, since it uses less digits than its factorization.

406561315425016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50820164428133 (or 50820164428129 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 406561315425016 in words is "four hundred six trillion, five hundred sixty-one billion, three hundred fifteen million, four hundred twenty-five thousand, sixteen".