641520067675 has 6 divisors (see below), whose sum is σ = 795484883948. Its totient is φ = 513216054120.

The previous prime is 641520067651. The next prime is 641520067703. The reversal of 641520067675 is 576760025146.

It is not a de Polignac number, because 641520067675 - 2⁷ = 641520067547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12830401329 + ... + 12830401378.

Almost surely, 2^641520067675 is an apocalyptic number.

641520067675 is a deficient number, since it is larger than the sum of its proper divisors (153964816273).

641520067675 is a wasteful number, since it uses less digits than its factorization.

641520067675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25660802717 (or 25660802712 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 641520067675 in words is "six hundred forty-one billion, five hundred twenty million, sixty-seven thousand, six hundred seventy-five".