643601604562 has 16 divisors (see below), whose sum is σ = 1141362452160. Its totient is φ = 266317905168.

The previous prime is 643601604509. The next prime is 643601604563. The reversal of 643601604562 is 265406106346.

It is not an unprimeable number, because it can be changed into a prime (643601604563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792612408 + ... + 792613219.

It is an arithmetic number, because the mean of its divisors is an integer number (71335153260).

Almost surely, 2^643601604562 is an apocalyptic number.

643601604562 is a deficient number, since it is larger than the sum of its proper divisors (497760847598).

643601604562 is a wasteful number, since it uses less digits than its factorization.

643601604562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585225665.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 643601604562 in words is "six hundred forty-three billion, six hundred one million, six hundred four thousand, five hundred sixty-two".