87911084394665 has 32 divisors (see below), whose sum is σ = 120912104647680. Its totient is φ = 60107774436864.

The previous prime is 87911084394647. The next prime is 87911084394691. The reversal of 87911084394665 is 56649348011978.

It is not a de Polignac number, because 87911084394665 - 2²⁶ = 87911017285801 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78220421 + ... + 79336349.

It is an arithmetic number, because the mean of its divisors is an integer number (3778503270240).

Almost surely, 2^{87911084394665} is an apocalyptic number.

It is an amenable number.

87911084394665 is a deficient number, since it is larger than the sum of its proper divisors (33001020253015).

87911084394665 is a wasteful number, since it uses less digits than its factorization.

87911084394665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122441.

The product of its (nonzero) digits is 313528320, while the sum is 71.

The spelling of 87911084394665 in words is "eighty-seven trillion, nine hundred eleven billion, eighty-four million, three hundred ninety-four thousand, six hundred sixty-five".