28755148888877 has 2 divisors, whose sum is σ = 28755148888878. Its totient is φ = 28755148888876.

The previous prime is 28755148888831. The next prime is 28755148888897. The reversal of 28755148888877 is 77888884155782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18773207833636 + 9981941055241 = 4332806^2 + 3159421^2 .

It is a cyclic number.

It is not a de Polignac number, because 28755148888877 - 2¹⁸ = 28755148626733 is a prime.

It is a super-2 number, since 2×28755148888877² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28755148888897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14377574444438 + 14377574444439.

It is an arithmetic number, because the mean of its divisors is an integer number (14377574444439).

Almost surely, 2^{28755148888877} is an apocalyptic number.

It is an amenable number.

28755148888877 is a deficient number, since it is larger than the sum of its proper divisors (1).

28755148888877 is an equidigital number, since it uses as much as digits as its factorization.

28755148888877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17983078400, while the sum is 86.

The spelling of 28755148888877 in words is "twenty-eight trillion, seven hundred fifty-five billion, one hundred forty-eight million, eight hundred eighty-eight thousand, eight hundred seventy-seven".