28331877373 has 2 divisors, whose sum is σ = 28331877374. Its totient is φ = 28331877372.

The previous prime is 28331877317. The next prime is 28331877401. The reversal of 28331877373 is 37377813382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17307507364 + 11024370009 = 131558^2 + 104997^2 .

It is a cyclic number.

It is not a de Polignac number, because 28331877373 - 2⁹ = 28331876861 is a prime.

It is a super-2 number, since 2×28331877373² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28331877373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28331878373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14165938686 + 14165938687.

It is an arithmetic number, because the mean of its divisors is an integer number (14165938687).

Almost surely, 2^28331877373 is an apocalyptic number.

It is an amenable number.

28331877373 is a deficient number, since it is larger than the sum of its proper divisors (1).

28331877373 is an equidigital number, since it uses as much as digits as its factorization.

28331877373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 52.

The spelling of 28331877373 in words is "twenty-eight billion, three hundred thirty-one million, eight hundred seventy-seven thousand, three hundred seventy-three".