87128392755 has 8 divisors (see below), whose sum is σ = 139405428432. Its totient is φ = 46468476128.

The previous prime is 87128392751. The next prime is 87128392781. The reversal of 87128392755 is 55729382178.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87128392755 - 2² = 87128392751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87128392695 and 87128392704.

It is not an unprimeable number, because it can be changed into a prime (87128392751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2904279744 + ... + 2904279773.

It is an arithmetic number, because the mean of its divisors is an integer number (17425678554).

Almost surely, 2^87128392755 is an apocalyptic number.

87128392755 is a deficient number, since it is larger than the sum of its proper divisors (52277035677).

87128392755 is a wasteful number, since it uses less digits than its factorization.

87128392755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5808559525.

The product of its digits is 8467200, while the sum is 57.

The spelling of 87128392755 in words is "eighty-seven billion, one hundred twenty-eight million, three hundred ninety-two thousand, seven hundred fifty-five".