641703344537 has 8 divisors (see below), whose sum is σ = 679909405032. Its totient is φ = 603548262400.

The previous prime is 641703344531. The next prime is 641703344543. The reversal of 641703344537 is 735443307146.

It is an interprime number because it is at equal distance from previous prime (641703344531) and next prime (641703344543).

It can be written as a sum of positive squares in 4 ways, for example, as 295548798736 + 346154545801 = 543644^2 + 588349^2 .

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 641703344537 - 2⁴ = 641703344521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 641703344491 and 641703344500.

It is not an unprimeable number, because it can be changed into a prime (641703344531) 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, 12718664 + ... + 12769017.

It is an arithmetic number, because the mean of its divisors is an integer number (84988675629).

Almost surely, 2^641703344537 is an apocalyptic number.

It is an amenable number.

641703344537 is a deficient number, since it is larger than the sum of its proper divisors (38206060495).

641703344537 is a wasteful number, since it uses less digits than its factorization.

641703344537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25489179.

The product of its (nonzero) digits is 2540160, while the sum is 47.

The spelling of 641703344537 in words is "six hundred forty-one billion, seven hundred three million, three hundred forty-four thousand, five hundred thirty-seven".