406846178980 has 12 divisors (see below), whose sum is σ = 854376975900. Its totient is φ = 162738471584.

The previous prime is 406846178957. The next prime is 406846178989. The reversal of 406846178980 is 89871648604.

It can be written as a sum of positive squares in 2 ways, for example, as 196928262756 + 209917916224 = 443766^2 + 458168^2 .

It is not an unprimeable number, because it can be changed into a prime (406846178989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10171154455 + ... + 10171154494.

It is an arithmetic number, because the mean of its divisors is an integer number (71198081325).

Almost surely, 2^406846178980 is an apocalyptic number.

It is an amenable number.

406846178980 is an abundant number, since it is smaller than the sum of its proper divisors (447530796920).

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

406846178980 is a wasteful number, since it uses less digits than its factorization.

406846178980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20342308958 (or 20342308956 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 61.

The spelling of 406846178980 in words is "four hundred six billion, eight hundred forty-six million, one hundred seventy-eight thousand, nine hundred eighty".