634843493041 has 8 divisors (see below), whose sum is σ = 635923923624. Its totient is φ = 633763209600.

The previous prime is 634843492973. The next prime is 634843493071. The reversal of 634843493041 is 140394348436.

It can be written as a sum of positive squares in 4 ways, for example, as 24068419600 + 610775073441 = 155140^2 + 781521^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 634843493041 - 2²¹ = 634841395889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634843493071) 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, 11804685 + ... + 11858341.

It is an arithmetic number, because the mean of its divisors is an integer number (79490490453).

Almost surely, 2^634843493041 is an apocalyptic number.

It is an amenable number.

634843493041 is a deficient number, since it is larger than the sum of its proper divisors (1080430583).

634843493041 is a wasteful number, since it uses less digits than its factorization.

634843493041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73571.

The product of its (nonzero) digits is 2985984, while the sum is 49.

The spelling of 634843493041 in words is "six hundred thirty-four billion, eight hundred forty-three million, four hundred ninety-three thousand, forty-one".