6446620412101 has 4 divisors (see below), whose sum is σ = 6524290537632. Its totient is φ = 6368950286572.

The previous prime is 6446620412083. The next prime is 6446620412117. The reversal of 6446620412101 is 1012140266446.

It is a happy number.

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 6446620412101 - 2³⁹ = 5896864598213 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 (6446620412201) 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, 38835062641 + ... + 38835062806.

It is an arithmetic number, because the mean of its divisors is an integer number (1631072634408).

Almost surely, 2^{6446620412101} is an apocalyptic number.

It is an amenable number.

6446620412101 is a deficient number, since it is larger than the sum of its proper divisors (77670125531).

6446620412101 is an equidigital number, since it uses as much as digits as its factorization.

6446620412101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77670125530.

The product of its (nonzero) digits is 55296, while the sum is 37.

Adding to 6446620412101 its reverse (1012140266446), we get a palindrome (7458760678547).

The spelling of 6446620412101 in words is "six trillion, four hundred forty-six billion, six hundred twenty million, four hundred twelve thousand, one hundred one".