401818200402 has 8 divisors (see below), whose sum is σ = 803636400816. Its totient is φ = 133939400132.

The previous prime is 401818200247. The next prime is 401818200439. The reversal of 401818200402 is 204002818104.

It is a sphenic number, since it is the product of 3 distinct primes.

401818200402 is an admirable number.

It is a super-2 number, since 2×401818200402² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401818200402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33484850028 + ... + 33484850039.

It is an arithmetic number, because the mean of its divisors is an integer number (100454550102).

Almost surely, 2^401818200402 is an apocalyptic number.

401818200402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

401818200402 is a wasteful number, since it uses less digits than its factorization.

401818200402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66969700072.

The product of its (nonzero) digits is 4096, while the sum is 30.

The spelling of 401818200402 in words is "four hundred one billion, eight hundred eighteen million, two hundred thousand, four hundred two".