6420381143 has 32 divisors (see below), whose sum is σ = 7818612480. Its totient is φ = 5196096000.

The previous prime is 6420381103. The next prime is 6420381167. The reversal of 6420381143 is 3411830246.

It is a cyclic number.

It is not a de Polignac number, because 6420381143 - 2²⁸ = 6151945687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420381103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3449033 + ... + 3450893.

It is an arithmetic number, because the mean of its divisors is an integer number (244331640).

Almost surely, 2^6420381143 is an apocalyptic number.

6420381143 is a deficient number, since it is larger than the sum of its proper divisors (1398231337).

6420381143 is a wasteful number, since it uses less digits than its factorization.

6420381143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 6420381143 is about 80127.2808910923. The cubic root of 6420381143 is about 1858.6042968310.

The spelling of 6420381143 in words is "six billion, four hundred twenty million, three hundred eighty-one thousand, one hundred forty-three".