401856745822 has 12 divisors (see below), whose sum is σ = 701199015840. Its totient is φ = 172224319596.

The previous prime is 401856745813. The next prime is 401856745837. The reversal of 401856745822 is 228547658104.

It is a super-2 number, since 2×401856745822² (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 401856745822.

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 5 ways as a sum of consecutive naturals, for example, 2050289422 + ... + 2050289617.

It is an arithmetic number, because the mean of its divisors is an integer number (58433251320).

Almost surely, 2^401856745822 is an apocalyptic number.

401856745822 is a deficient number, since it is larger than the sum of its proper divisors (299342270018).

401856745822 is a wasteful number, since it uses less digits than its factorization.

401856745822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100579055 (or 4100579048 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 52.

The spelling of 401856745822 in words is "four hundred one billion, eight hundred fifty-six million, seven hundred forty-five thousand, eight hundred twenty-two".