401865003650 has 48 divisors (see below), whose sum is σ = 826590853728. Its totient is φ = 144130896000.

The previous prime is 401865003641. The next prime is 401865003689. The reversal of 401865003650 is 56300568104.

It is a super-2 number, since 2×401865003650² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4964396 + ... + 5044695.

It is an arithmetic number, because the mean of its divisors is an integer number (17220642786).

Almost surely, 2^401865003650 is an apocalyptic number.

401865003650 is an abundant number, since it is smaller than the sum of its proper divisors (424725850078).

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

401865003650 is a wasteful number, since it uses less digits than its factorization.

401865003650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009187 (or 10009182 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 401865003650 in words is "four hundred one billion, eight hundred sixty-five million, three thousand, six hundred fifty".