28783320264731 has 2 divisors, whose sum is σ = 28783320264732. Its totient is φ = 28783320264730.

The previous prime is 28783320264709. The next prime is 28783320264773. The reversal of 28783320264731 is 13746202338782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28783320264731 - 2⁴² = 24385273753627 is a prime.

It is a super-2 number, since 2×28783320264731² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28783320266731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14391660132365 + 14391660132366.

It is an arithmetic number, because the mean of its divisors is an integer number (14391660132366).

Almost surely, 2^{28783320264731} is an apocalyptic number.

28783320264731 is a deficient number, since it is larger than the sum of its proper divisors (1).

28783320264731 is an equidigital number, since it uses as much as digits as its factorization.

28783320264731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16257024, while the sum is 56.

The spelling of 28783320264731 in words is "twenty-eight trillion, seven hundred eighty-three billion, three hundred twenty million, two hundred sixty-four thousand, seven hundred thirty-one".