15707320087 has 2 divisors, whose sum is σ = 15707320088. Its totient is φ = 15707320086.

The previous prime is 15707320061. The next prime is 15707320091. The reversal of 15707320087 is 78002370751.

It is a strong prime.

It is an emirp because it is prime and its reverse (78002370751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15707320087 - 2¹⁵ = 15707287319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15707320487) 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, 7853660043 + 7853660044.

It is an arithmetic number, because the mean of its divisors is an integer number (7853660044).

Almost surely, 2^15707320087 is an apocalyptic number.

15707320087 is a deficient number, since it is larger than the sum of its proper divisors (1).

15707320087 is an equidigital number, since it uses as much as digits as its factorization.

15707320087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 15707320087 in words is "fifteen billion, seven hundred seven million, three hundred twenty thousand, eighty-seven".