9287987664442 has 8 divisors (see below), whose sum is σ = 13992819844500. Its totient is φ = 4623714382944.

The previous prime is 9287987664343. The next prime is 9287987664443. The reversal of 9287987664442 is 2444667897829.

It can be written as a sum of positive squares in 2 ways, for example, as 9268499225241 + 19488439201 = 3044421^2 + 139601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (9287987664443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10139724067 + ... + 10139724982.

Almost surely, 2^{9287987664442} is an apocalyptic number.

9287987664442 is a deficient number, since it is larger than the sum of its proper divisors (4704832180058).

9287987664442 is a wasteful number, since it uses less digits than its factorization.

9287987664442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20279449280.

The product of its digits is 2341011456, while the sum is 76.

The spelling of 9287987664442 in words is "nine trillion, two hundred eighty-seven billion, nine hundred eighty-seven million, six hundred sixty-four thousand, four hundred forty-two".