659976390501643 has 32 divisors (see below), whose sum is σ = 692095548165120. Its totient is φ = 628790116325280.

The previous prime is 659976390501599. The next prime is 659976390501697. The reversal of 659976390501643 is 346105093679956.

It is a cyclic number.

It is not a de Polignac number, because 659976390501643 - 2¹³ = 659976390493451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659976390501343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2906925696 + ... + 2907152722.

It is an arithmetic number, because the mean of its divisors is an integer number (21627985880160).

Almost surely, 2^{659976390501643} is an apocalyptic number.

659976390501643 is a deficient number, since it is larger than the sum of its proper divisors (32119157663477).

659976390501643 is a wasteful number, since it uses less digits than its factorization.

659976390501643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236007.

The product of its (nonzero) digits is 992023200, while the sum is 73.

The spelling of 659976390501643 in words is "six hundred fifty-nine trillion, nine hundred seventy-six billion, three hundred ninety million, five hundred one thousand, six hundred forty-three".