87128392695 has 32 divisors (see below), whose sum is σ = 140150136000. Its totient is φ = 46220903424.

The previous prime is 87128392679. The next prime is 87128392697. The reversal of 87128392695 is 59629382178.

It is not a de Polignac number, because 87128392695 - 2⁴ = 87128392679 is a prime.

It is a super-3 number, since 3×87128392695³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87128392697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2120769 + ... + 2161461.

It is an arithmetic number, because the mean of its divisors is an integer number (4379691750).

Almost surely, 2^87128392695 is an apocalyptic number.

87128392695 is a deficient number, since it is larger than the sum of its proper divisors (53021743305).

87128392695 is a wasteful number, since it uses less digits than its factorization.

87128392695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41459.

The product of its digits is 13063680, while the sum is 60.

The spelling of 87128392695 in words is "eighty-seven billion, one hundred twenty-eight million, three hundred ninety-two thousand, six hundred ninety-five".