87509257699 has 16 divisors (see below), whose sum is σ = 90683328960. Its totient is φ = 84390359040.

The previous prime is 87509257697. The next prime is 87509257721. The reversal of 87509257699 is 99675290578.

It is not a de Polignac number, because 87509257699 - 2¹ = 87509257697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87509257691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1207122 + ... + 1277560.

It is an arithmetic number, because the mean of its divisors is an integer number (5667708060).

Almost surely, 2^87509257699 is an apocalyptic number.

87509257699 is a deficient number, since it is larger than the sum of its proper divisors (3174071261).

87509257699 is a wasteful number, since it uses less digits than its factorization.

87509257699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70830.

The product of its (nonzero) digits is 85730400, while the sum is 67.

The spelling of 87509257699 in words is "eighty-seven billion, five hundred nine million, two hundred fifty-seven thousand, six hundred ninety-nine".