28737123433 has 2 divisors, whose sum is σ = 28737123434. Its totient is φ = 28737123432.

The previous prime is 28737123413. The next prime is 28737123463. The reversal of 28737123433 is 33432173782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25509520089 + 3227603344 = 159717^2 + 56812^2 .

It is a cyclic number.

It is not a de Polignac number, because 28737123433 - 2²⁵ = 28703569001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28737123433.

It is not a weakly prime, because it can be changed into another prime (28737123413) 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 as a sum of consecutive naturals, namely, 14368561716 + 14368561717.

It is an arithmetic number, because the mean of its divisors is an integer number (14368561717).

Almost surely, 2^28737123433 is an apocalyptic number.

It is an amenable number.

28737123433 is a deficient number, since it is larger than the sum of its proper divisors (1).

28737123433 is an equidigital number, since it uses as much as digits as its factorization.

28737123433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 43.

The spelling of 28737123433 in words is "twenty-eight billion, seven hundred thirty-seven million, one hundred twenty-three thousand, four hundred thirty-three".