659976390501642 has 48 divisors (see below), whose sum is σ = 1434262632791040. Its totient is φ = 219329180109600.

The previous prime is 659976390501599. The next prime is 659976390501697. The reversal of 659976390501642 is 246105093679956.

659976390501642 is a `hidden beast` number, since 6 + 5 + 9 + 9 + 76 + 3 + 9 + 0 + 501 + 6 + 42 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18395109 + ... + 40722632.

It is an arithmetic number, because the mean of its divisors is an integer number (29880471516480).

Almost surely, 2^{659976390501642} is an apocalyptic number.

659976390501642 is an abundant number, since it is smaller than the sum of its proper divisors (774286242289398).

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

659976390501642 is a wasteful number, since it uses less digits than its factorization.

659976390501642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59119619 (or 59119616 counting only the distinct ones).

The product of its (nonzero) digits is 661348800, while the sum is 72.

The spelling of 659976390501642 in words is "six hundred fifty-nine trillion, nine hundred seventy-six billion, three hundred ninety million, five hundred one thousand, six hundred forty-two".