280280055550 has 48 divisors (see below), whose sum is σ = 569496799872. Its totient is φ = 101779682400.

The previous prime is 280280055499. The next prime is 280280055563. The reversal of 280280055550 is 55550082082.

It is a happy number.

It is a super-2 number, since 2×280280055550² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49369 + ... + 750331.

It is an arithmetic number, because the mean of its divisors is an integer number (11864516664).

Almost surely, 2^280280055550 is an apocalyptic number.

280280055550 is an abundant number, since it is smaller than the sum of its proper divisors (289216744322).

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

280280055550 is a wasteful number, since it uses less digits than its factorization.

280280055550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701713 (or 701708 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 40.

The spelling of 280280055550 in words is "two hundred eighty billion, two hundred eighty million, fifty-five thousand, five hundred fifty".