406664885016 has 160 divisors (see below), whose sum is σ = 1227422528640. Its totient is φ = 125049526272.

The previous prime is 406664884979. The next prime is 406664885017. The reversal of 406664885016 is 610588466604.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406664885017) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14281305 + ... + 14309751.

It is an arithmetic number, because the mean of its divisors is an integer number (7671390804).

Almost surely, 2^406664885016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406664885016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613711264320).

406664885016 is an abundant number, since it is smaller than the sum of its proper divisors (820757643624).

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

406664885016 is a wasteful number, since it uses less digits than its factorization.

406664885016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30175 (or 30162 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 406664885016 in words is "four hundred six billion, six hundred sixty-four million, eight hundred eighty-five thousand, sixteen".