6431720190349 has 8 divisors (see below), whose sum is σ = 6509261404800. Its totient is φ = 6354180181056.

The previous prime is 6431720190347. The next prime is 6431720190361. The reversal of 6431720190349 is 9430910271346.

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 6431720190349 - 2¹ = 6431720190347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6431720190347) 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, 15237852 + ... + 15654250.

It is an arithmetic number, because the mean of its divisors is an integer number (813657675600).

Almost surely, 2^{6431720190349} is an apocalyptic number.

It is an amenable number.

6431720190349 is a deficient number, since it is larger than the sum of its proper divisors (77541214451).

6431720190349 is a wasteful number, since it uses less digits than its factorization.

6431720190349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602579.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 6431720190349 in words is "six trillion, four hundred thirty-one billion, seven hundred twenty million, one hundred ninety thousand, three hundred forty-nine".