9287987664402 has 16 divisors (see below), whose sum is σ = 20639972587680. Its totient is φ = 3095995888116.

The previous prime is 9287987664343. The next prime is 9287987664443. The reversal of 9287987664402 is 2044667897829.

9287987664402 is a `hidden beast` number, since 9 + 2 + 8 + 7 + 98 + 76 + 64 + 402 = 666.

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, 85999885728 + ... + 85999885835.

It is an arithmetic number, because the mean of its divisors is an integer number (1289998286730).

Almost surely, 2^{9287987664402} is an apocalyptic number.

9287987664402 is an abundant number, since it is smaller than the sum of its proper divisors (11351984923278).

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

9287987664402 is a wasteful number, since it uses less digits than its factorization.

9287987664402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171999771574 (or 171999771568 counting only the distinct ones).

The product of its (nonzero) digits is 585252864, while the sum is 72.

The spelling of 9287987664402 in words is "nine trillion, two hundred eighty-seven billion, nine hundred eighty-seven million, six hundred sixty-four thousand, four hundred two".