6431042784387 has 8 divisors (see below), whose sum is σ = 9234317844304. Its totient is φ = 3957564790368.

The previous prime is 6431042784371. The next prime is 6431042784407. The reversal of 6431042784387 is 7834872401346.

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

It is not a de Polignac number, because 6431042784387 - 2⁴ = 6431042784371 is a prime.

It is a super-2 number, since 2×6431042784387² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6431042784347) 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, 82449266428 + ... + 82449266505.

It is an arithmetic number, because the mean of its divisors is an integer number (1154289730538).

Almost surely, 2^{6431042784387} is an apocalyptic number.

6431042784387 is a deficient number, since it is larger than the sum of its proper divisors (2803275059917).

6431042784387 is a wasteful number, since it uses less digits than its factorization.

6431042784387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164898532949.

The product of its (nonzero) digits is 21676032, while the sum is 57.

The spelling of 6431042784387 in words is "six trillion, four hundred thirty-one billion, forty-two million, seven hundred eighty-four thousand, three hundred eighty-seven".