4221646415677 has 4 divisors (see below), whose sum is σ = 4235134104220. Its totient is φ = 4208158727136.

The previous prime is 4221646415669. The next prime is 4221646415687. The reversal of 4221646415677 is 7765146461224.

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 24151024836 + 4197495390841 = 155406^2 + 2048779^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221646415677 - 2³ = 4221646415669 is a prime.

It is a super-2 number, since 2×4221646415677² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221646415687) 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, 6743843802 + ... + 6743844427.

It is an arithmetic number, because the mean of its divisors is an integer number (1058783526055).

Almost surely, 2^{4221646415677} is an apocalyptic number.

It is an amenable number.

4221646415677 is a deficient number, since it is larger than the sum of its proper divisors (13487688543).

4221646415677 is a wasteful number, since it uses less digits than its factorization.

4221646415677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13487688542.

The product of its digits is 13547520, while the sum is 55.

The spelling of 4221646415677 in words is "four trillion, two hundred twenty-one billion, six hundred forty-six million, four hundred fifteen thousand, six hundred seventy-seven".