87305033749 has 2 divisors, whose sum is σ = 87305033750. Its totient is φ = 87305033748.

The previous prime is 87305033743. The next prime is 87305033819. The reversal of 87305033749 is 94733050378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86524222500 + 780811249 = 294150^2 + 27943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87305033749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87305033743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43652516874 + 43652516875.

It is an arithmetic number, because the mean of its divisors is an integer number (43652516875).

Almost surely, 2^87305033749 is an apocalyptic number.

It is an amenable number.

87305033749 is a deficient number, since it is larger than the sum of its proper divisors (1).

87305033749 is an equidigital number, since it uses as much as digits as its factorization.

87305033749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 49.

The spelling of 87305033749 in words is "eighty-seven billion, three hundred five million, thirty-three thousand, seven hundred forty-nine".