6677773010621 has 4 divisors (see below), whose sum is σ = 6908041045500. Its totient is φ = 6447504975744.

The previous prime is 6677773010617. The next prime is 6677773010627. The reversal of 6677773010621 is 1260103777766.

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 1792519322500 + 4885253688121 = 1338850^2 + 2210261^2 .

It is a cyclic number.

It is not a de Polignac number, because 6677773010621 - 2² = 6677773010617 is a prime.

It is a super-3 number, since 3×6677773010621³ (a number of 39 digits) contains 333 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 (6677773010627) 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, 115134017396 + ... + 115134017453.

It is an arithmetic number, because the mean of its divisors is an integer number (1727010261375).

Almost surely, 2^{6677773010621} is an apocalyptic number.

It is an amenable number.

6677773010621 is a deficient number, since it is larger than the sum of its proper divisors (230268034879).

6677773010621 is a wasteful number, since it uses less digits than its factorization.

6677773010621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230268034878.

The product of its (nonzero) digits is 3111696, while the sum is 53.

The spelling of 6677773010621 in words is "six trillion, six hundred seventy-seven billion, seven hundred seventy-three million, ten thousand, six hundred twenty-one".