6419865074921 has 8 divisors (see below), whose sum is σ = 6531229684224. Its totient is φ = 6309310390480.

The previous prime is 6419865074891. The next prime is 6419865074941. The reversal of 6419865074921 is 1294705689146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6419865074921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6419865074941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202465226 + ... + 202496931.

It is an arithmetic number, because the mean of its divisors is an integer number (816403710528).

Almost surely, 2^{6419865074921} is an apocalyptic number.

It is an amenable number.

6419865074921 is a deficient number, since it is larger than the sum of its proper divisors (111364609303).

6419865074921 is a wasteful number, since it uses less digits than its factorization.

6419865074921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404962431.

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 6419865074921 in words is "six trillion, four hundred nineteen billion, eight hundred sixty-five million, seventy-four thousand, nine hundred twenty-one".