28065780141 has 16 divisors (see below), whose sum is σ = 42771116544. Its totient is φ = 16036008624.

The previous prime is 28065780091. The next prime is 28065780187. The reversal of 28065780141 is 14108756082.

It is not a de Polignac number, because 28065780141 - 2⁹ = 28065779629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28065780093 and 28065780102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28065780241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172450 + ... + 293036.

It is an arithmetic number, because the mean of its divisors is an integer number (2673194784).

Almost surely, 2^28065780141 is an apocalyptic number.

28065780141 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28065780141 is a deficient number, since it is larger than the sum of its proper divisors (14705336403).

28065780141 is a wasteful number, since it uses less digits than its factorization.

28065780141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131680.

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 28065780141 in words is "twenty-eight billion, sixty-five million, seven hundred eighty thousand, one hundred forty-one".