641064342340145 has 8 divisors (see below), whose sum is σ = 774440145109800. Its totient is φ = 509409517671040.

The previous prime is 641064342340133. The next prime is 641064342340157. The reversal of 641064342340145 is 541043243460146.

It is an interprime number because it is at equal distance from previous prime (641064342340133) and next prime (641064342340157).

It can be written as a sum of positive squares in 4 ways, for example, as 28761640288144 + 612302702052001 = 5362988^2 + 24744751^2 .

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

It is not a de Polignac number, because 641064342340145 - 2²⁴ = 641064325562929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 641064342340145.

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, 430244524316 + ... + 430244525805.

It is an arithmetic number, because the mean of its divisors is an integer number (96805018138725).

Almost surely, 2^{641064342340145} is an apocalyptic number.

It is an amenable number.

641064342340145 is a deficient number, since it is larger than the sum of its proper divisors (133375802769655).

641064342340145 is a wasteful number, since it uses less digits than its factorization.

641064342340145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860489050275.

The product of its (nonzero) digits is 3317760, while the sum is 47.

The spelling of 641064342340145 in words is "six hundred forty-one trillion, sixty-four billion, three hundred forty-two million, three hundred forty thousand, one hundred forty-five".