6630406725142 has 4 divisors (see below), whose sum is σ = 9945610087716. Its totient is φ = 3315203362570.

The previous prime is 6630406725139. The next prime is 6630406725161. The reversal of 6630406725142 is 2415276040366.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×6630406725142² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6630406725092 and 6630406725101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1657601681284 + ... + 1657601681287.

It is an arithmetic number, because the mean of its divisors is an integer number (2486402521929).

Almost surely, 2^{6630406725142} is an apocalyptic number.

6630406725142 is a deficient number, since it is larger than the sum of its proper divisors (3315203362574).

6630406725142 is a wasteful number, since it uses less digits than its factorization.

6630406725142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315203362573.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 6630406725142 in words is "six trillion, six hundred thirty billion, four hundred six million, seven hundred twenty-five thousand, one hundred forty-two".