28767116501 has 2 divisors, whose sum is σ = 28767116502. Its totient is φ = 28767116500.

The previous prime is 28767116471. The next prime is 28767116507. The reversal of 28767116501 is 10561176782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15037135876 + 13729980625 = 122626^2 + 117175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28767116501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28767116507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14383558250 + 14383558251.

It is an arithmetic number, because the mean of its divisors is an integer number (14383558251).

Almost surely, 2^28767116501 is an apocalyptic number.

It is an amenable number.

28767116501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28767116501 is an equidigital number, since it uses as much as digits as its factorization.

28767116501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 28767116501 in words is "twenty-eight billion, seven hundred sixty-seven million, one hundred sixteen thousand, five hundred one".