6420441464377 has 4 divisors (see below), whose sum is σ = 6425353815696. Its totient is φ = 6415529113060.

The previous prime is 6420441464369. The next prime is 6420441464387. The reversal of 6420441464377 is 7734641440246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6420441464377 - 2³ = 6420441464369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6420441464317) 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 3 ways as a sum of consecutive naturals, for example, 2456173699 + ... + 2456176312.

It is an arithmetic number, because the mean of its divisors is an integer number (1606338453924).

Almost surely, 2^{6420441464377} is an apocalyptic number.

It is an amenable number.

6420441464377 is a deficient number, since it is larger than the sum of its proper divisors (4912351319).

6420441464377 is a wasteful number, since it uses less digits than its factorization.

6420441464377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912351318.

The product of its (nonzero) digits is 10838016, while the sum is 52.

The spelling of 6420441464377 in words is "six trillion, four hundred twenty billion, four hundred forty-one million, four hundred sixty-four thousand, three hundred seventy-seven".