405642226556436 has 48 divisors (see below), whose sum is σ = 987664156975104. Its totient is φ = 129333432403296.

The previous prime is 405642226556419. The next prime is 405642226556443. The reversal of 405642226556436 is 634655622246504.

It is a self number, because there is not a number n which added to its sum of digits gives 405642226556436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10216581 + ... + 30259923.

It is an arithmetic number, because the mean of its divisors is an integer number (20576336603648).

Almost surely, 2^{405642226556436} is an apocalyptic number.

405642226556436 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

405642226556436 is an abundant number, since it is smaller than the sum of its proper divisors (582021930418668).

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

405642226556436 is a wasteful number, since it uses less digits than its factorization.

405642226556436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20116700 (or 20116698 counting only the distinct ones).

The product of its (nonzero) digits is 248832000, while the sum is 60.

The spelling of 405642226556436 in words is "four hundred five trillion, six hundred forty-two billion, two hundred twenty-six million, five hundred fifty-six thousand, four hundred thirty-six".