280845942601 has 9 divisors (see below), whose sum is σ = 326702656749. Its totient is φ = 240721913964.

The previous prime is 280845942583. The next prime is 280845942623. The reversal of 280845942601 is 106249548082.

The square root of 280845942601 is 529949.

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

It is not a de Polignac number, because 280845942601 - 2¹⁵ = 280845909833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (280845942661) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3671790 + ... + 3747496.

Almost surely, 2^280845942601 is an apocalyptic number.

280845942601 is the 529949-th square number.

280845942601 is the 264975-th centered octagonal number.

It is an amenable number.

280845942601 is a deficient number, since it is larger than the sum of its proper divisors (45856714148).

280845942601 is an frugal number, since it uses more digits than its factorization.

280845942601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151428 (or 75714 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

Multiplying 280845942601 by its sum of digits (49), we get a square (13761451187449 = 3709643²).

280845942601 divided by its sum of digits (49) gives a square (5731549849 = 75707²).

The spelling of 280845942601 in words is "two hundred eighty billion, eight hundred forty-five million, nine hundred forty-two thousand, six hundred one".