28780116101 has 8 divisors (see below), whose sum is σ = 31554264000. Its totient is φ = 26032263840.

The previous prime is 28780116061. The next prime is 28780116139. The reversal of 28780116101 is 10161108782.

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

It is not a de Polignac number, because 28780116101 - 2¹⁴ = 28780099717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28780116151) 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 7 ways as a sum of consecutive naturals, for example, 6571616 + ... + 6575993.

It is an arithmetic number, because the mean of its divisors is an integer number (3944283000).

Almost surely, 2^28780116101 is an apocalyptic number.

It is an amenable number.

28780116101 is a deficient number, since it is larger than the sum of its proper divisors (2774147899).

28780116101 is a wasteful number, since it uses less digits than its factorization.

28780116101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13147819.

The product of its (nonzero) digits is 5376, while the sum is 35.

The spelling of 28780116101 in words is "twenty-eight billion, seven hundred eighty million, one hundred sixteen thousand, one hundred one".