987656342493 has 16 divisors (see below), whose sum is σ = 1356543777600. Its totient is φ = 638808772224.

The previous prime is 987656342473. The next prime is 987656342537. The reversal of 987656342493 is 394243656789.

It is not a de Polignac number, because 987656342493 - 2⁶ = 987656342429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987656342473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25672896 + ... + 25711337.

It is an arithmetic number, because the mean of its divisors is an integer number (84783986100).

Almost surely, 2^987656342493 is an apocalyptic number.

It is an amenable number.

987656342493 is a deficient number, since it is larger than the sum of its proper divisors (368887435107).

987656342493 is a wasteful number, since it uses less digits than its factorization.

987656342493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51384428.

The product of its digits is 235146240, while the sum is 66.

The spelling of 987656342493 in words is "nine hundred eighty-seven billion, six hundred fifty-six million, three hundred forty-two thousand, four hundred ninety-three".