6423002133898 has 12 divisors (see below), whose sum is σ = 11207483315442. Its totient is φ = 2752715200200.

The previous prime is 6423002133893. The next prime is 6423002133931. The reversal of 6423002133898 is 8983312003246.

It can be written as a sum of positive squares in only one way, i.e., 5991152068489 + 431850065409 = 2447683^2 + 657153^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (6423002133893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32770418953 + ... + 32770419148.

Almost surely, 2^{6423002133898} is an apocalyptic number.

6423002133898 is a deficient number, since it is larger than the sum of its proper divisors (4784481181544).

6423002133898 is a wasteful number, since it uses less digits than its factorization.

6423002133898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65540838117 (or 65540838110 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 6423002133898 in words is "six trillion, four hundred twenty-three billion, two million, one hundred thirty-three thousand, eight hundred ninety-eight".