6268749067421 has 4 divisors (see below), whose sum is σ = 6268763461500. Its totient is φ = 6268734673344.

The previous prime is 6268749067409. The next prime is 6268749067429. The reversal of 6268749067421 is 1247609478626.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1960588044100 + 4308161023321 = 1400210^2 + 2075611^2 .

It is a cyclic number.

It is not a de Polignac number, because 6268749067421 - 2¹⁰ = 6268749066397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6268749067429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6522716 + ... + 7421813.

It is an arithmetic number, because the mean of its divisors is an integer number (1567190865375).

Almost surely, 2^{6268749067421} is an apocalyptic number.

It is an amenable number.

6268749067421 is a deficient number, since it is larger than the sum of its proper divisors (14394079).

6268749067421 is a wasteful number, since it uses less digits than its factorization.

6268749067421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14394078.

The product of its (nonzero) digits is 48771072, while the sum is 62.

The spelling of 6268749067421 in words is "six trillion, two hundred sixty-eight billion, seven hundred forty-nine million, sixty-seven thousand, four hundred twenty-one".