402018806460 has 48 divisors (see below), whose sum is σ = 1126235317536. Its totient is φ = 107149523712.

The previous prime is 402018806437. The next prime is 402018806471. The reversal of 402018806460 is 64608810204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1617159 + ... + 1849118.

It is an arithmetic number, because the mean of its divisors is an integer number (23463235782).

Almost surely, 2^402018806460 is an apocalyptic number.

It is an amenable number.

402018806460 is an abundant number, since it is smaller than the sum of its proper divisors (724216511076).

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

402018806460 is a wasteful number, since it uses less digits than its factorization.

402018806460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468222 (or 3468220 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The spelling of 402018806460 in words is "four hundred two billion, eighteen million, eight hundred six thousand, four hundred sixty".