280030028011 has 4 divisors (see below), whose sum is σ = 282074042952. Its totient is φ = 277986013072.

The previous prime is 280030027903. The next prime is 280030028023. The reversal of 280030028011 is 110820030082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 280030028011 - 2⁷ = 280030027883 is a prime.

It is a super-2 number, since 2×280030028011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280030022011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1022007265 + ... + 1022007538.

It is an arithmetic number, because the mean of its divisors is an integer number (70518510738).

Almost surely, 2^280030028011 is an apocalyptic number.

280030028011 is a deficient number, since it is larger than the sum of its proper divisors (2044014941).

280030028011 is a wasteful number, since it uses less digits than its factorization.

280030028011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044014940.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 280030028011 its reverse (110820030082), we get a palindrome (390850058093).

The spelling of 280030028011 in words is "two hundred eighty billion, thirty million, twenty-eight thousand, eleven".