987766665432 has 32 divisors (see below), whose sum is σ = 2614676468400. Its totient is φ = 309887581184.

The previous prime is 987766665419. The next prime is 987766665463. The reversal of 987766665432 is 234566667789.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210497957 + ... + 1210498772.

Almost surely, 2^987766665432 is an apocalyptic number.

It is an amenable number.

987766665432 is an abundant number, since it is smaller than the sum of its proper divisors (1626909802968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

987766665432 is a wasteful number, since it uses less digits than its factorization.

987766665432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420996755 (or 2420996751 counting only the distinct ones).

The product of its digits is 548674560, while the sum is 69.

The spelling of 987766665432 in words is "nine hundred eighty-seven billion, seven hundred sixty-six million, six hundred sixty-five thousand, four hundred thirty-two".