280555255553 has 8 divisors (see below), whose sum is σ = 290237341800. Its totient is φ = 270873687168.

The previous prime is 280555255549. The next prime is 280555255573. The reversal of 280555255553 is 355552555082.

It can be written as a sum of positive squares in 4 ways, for example, as 185387941489 + 95167314064 = 430567^2 + 308492^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 280555255553 - 2² = 280555255549 is a prime.

It is a super-2 number, since 2×280555255553² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (280555255573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1206575 + ... + 1420187.

It is an arithmetic number, because the mean of its divisors is an integer number (36279667725).

Almost surely, 2^280555255553 is an apocalyptic number.

It is an amenable number.

280555255553 is a deficient number, since it is larger than the sum of its proper divisors (9682086247).

280555255553 is a wasteful number, since it uses less digits than its factorization.

280555255553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258931.

The product of its (nonzero) digits is 7500000, while the sum is 50.

The spelling of 280555255553 in words is "two hundred eighty billion, five hundred fifty-five million, two hundred fifty-five thousand, five hundred fifty-three".