6428805139787 has 2 divisors, whose sum is σ = 6428805139788. Its totient is φ = 6428805139786.

The previous prime is 6428805139777. The next prime is 6428805139831. The reversal of 6428805139787 is 7879315088246.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6428805139787 is a prime.

It is a super-2 number, since 2×6428805139787² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6428805139717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214402569893 + 3214402569894.

It is an arithmetic number, because the mean of its divisors is an integer number (3214402569894).

It is a 1-persistent number, because it is pandigital, but 2⋅6428805139787 = 12857610279574 is not.

Almost surely, 2^{6428805139787} is an apocalyptic number.

6428805139787 is a deficient number, since it is larger than the sum of its proper divisors (1).

6428805139787 is an equidigital number, since it uses as much as digits as its factorization.

6428805139787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162570240, while the sum is 68.

The spelling of 6428805139787 in words is "six trillion, four hundred twenty-eight billion, eight hundred five million, one hundred thirty-nine thousand, seven hundred eighty-seven".