28027780503 has 8 divisors (see below), whose sum is σ = 37374188016. Its totient is φ = 18683280000.

The previous prime is 28027780499. The next prime is 28027780577. The reversal of 28027780503 is 30508772082.

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

It is not a de Polignac number, because 28027780503 - 2² = 28027780499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28027780903) 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, 442098 + ... + 501503.

It is an arithmetic number, because the mean of its divisors is an integer number (4671773502).

Almost surely, 2^28027780503 is an apocalyptic number.

28027780503 is a deficient number, since it is larger than the sum of its proper divisors (9346407513).

28027780503 is an equidigital number, since it uses as much as digits as its factorization.

28027780503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953505.

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 28027780503 in words is "twenty-eight billion, twenty-seven million, seven hundred eighty thousand, five hundred three".