641135066465 has 8 divisors (see below), whose sum is σ = 770144753088. Its totient is φ = 512386270960.

The previous prime is 641135066437. The next prime is 641135066471. The reversal of 641135066465 is 564660531146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 641135066465 - 2¹⁴ = 641135050081 is a prime.

It is a super-2 number, since 2×641135066465² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

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, 65217371 + ... + 65227200.

It is an arithmetic number, because the mean of its divisors is an integer number (96268094136).

Almost surely, 2^641135066465 is an apocalyptic number.

It is an amenable number.

641135066465 is a deficient number, since it is larger than the sum of its proper divisors (129009686623).

641135066465 is a wasteful number, since it uses less digits than its factorization.

641135066465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130445559.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 641135066465 in words is "six hundred forty-one billion, one hundred thirty-five million, sixty-six thousand, four hundred sixty-five".