28503493101 has 6 divisors (see below), whose sum is σ = 41171712270. Its totient is φ = 19002328728.

The previous prime is 28503493097. The next prime is 28503493111. The reversal of 28503493101 is 10139430582.

28503493101 is a `hidden beast` number, since 2 + 8 + 503 + 49 + 3 + 101 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20750690601 + 7752802500 = 144051^2 + 88050^2 .

It is not a de Polignac number, because 28503493101 - 2² = 28503493097 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28503493111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1583527386 + ... + 1583527403.

It is an arithmetic number, because the mean of its divisors is an integer number (6861952045).

Almost surely, 2^28503493101 is an apocalyptic number.

It is an amenable number.

28503493101 is a deficient number, since it is larger than the sum of its proper divisors (12668219169).

28503493101 is a wasteful number, since it uses less digits than its factorization.

28503493101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167054795 (or 3167054792 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 28503493101 in words is "twenty-eight billion, five hundred three million, four hundred ninety-three thousand, one hundred one".