987311366386 has 4 divisors (see below), whose sum is σ = 1480967049582. Its totient is φ = 493655683192.

The previous prime is 987311366351. The next prime is 987311366443. The reversal of 987311366386 is 683663113789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 683663113789 = 3793 ⋅180243373.

It can be written as a sum of positive squares in only one way, i.e., 900637062361 + 86674304025 = 949019^2 + 294405^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246827841595 + ... + 246827841598.

Almost surely, 2^987311366386 is an apocalyptic number.

987311366386 is a deficient number, since it is larger than the sum of its proper divisors (493655683196).

987311366386 is a wasteful number, since it uses less digits than its factorization.

987311366386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493655683195.

The product of its digits is 23514624, while the sum is 61.

The spelling of 987311366386 in words is "nine hundred eighty-seven billion, three hundred eleven million, three hundred sixty-six thousand, three hundred eighty-six".