87129611660366 has 16 divisors (see below), whose sum is σ = 142653937632768. Its totient is φ = 39582644086200.

The previous prime is 87129611660347. The next prime is 87129611660369. The reversal of 87129611660366 is 66306611692178.

It is a junction number, because it is equal to n+sod(n) for n = 87129611660299 and 87129611660308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87129611660369) 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, 1086201500 + ... + 1086281711.

It is an arithmetic number, because the mean of its divisors is an integer number (8915871102048).

Almost surely, 2^{87129611660366} is an apocalyptic number.

87129611660366 is a deficient number, since it is larger than the sum of its proper divisors (55524325972402).

87129611660366 is a wasteful number, since it uses less digits than its factorization.

87129611660366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172485047.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 87129611660366 in words is "eighty-seven trillion, one hundred twenty-nine billion, six hundred eleven million, six hundred sixty thousand, three hundred sixty-six".