402775545316 has 9 divisors (see below), whose sum is σ = 704859425571. Its totient is φ = 201387138012.

The previous prime is 402775545311. The next prime is 402775545317. The reversal of 402775545316 is 613545577204.

The square root of 402775545316 is 634646.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402775545316.

It is not an unprimeable number, because it can be changed into a prime (402775545311) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1110631 + ... + 1427953.

Almost surely, 2^402775545316 is an apocalyptic number.

402775545316 is the 634646-th square number.

It is an amenable number.

402775545316 is a deficient number, since it is larger than the sum of its proper divisors (302083880255).

402775545316 is an frugal number, since it uses more digits than its factorization.

402775545316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634650 (or 317325 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 49.

Multiplying 402775545316 by its sum of digits (49), we get a square (19736001720484 = 4442522²).

The spelling of 402775545316 in words is "four hundred two billion, seven hundred seventy-five million, five hundred forty-five thousand, three hundred sixteen".