677337721653 has 16 divisors (see below), whose sum is σ = 918462945600. Its totient is φ = 443886138240.

The previous prime is 677337721651. The next prime is 677337721661. The reversal of 677337721653 is 356127733776.

It is not a de Polignac number, because 677337721653 - 2¹ = 677337721651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 677337721593 and 677337721602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677337721651) 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 15 ways as a sum of consecutive naturals, for example, 5007673 + ... + 5141153.

It is an arithmetic number, because the mean of its divisors is an integer number (57403934100).

Almost surely, 2^677337721653 is an apocalyptic number.

It is an amenable number.

677337721653 is a deficient number, since it is larger than the sum of its proper divisors (241125223947).

677337721653 is a wasteful number, since it uses less digits than its factorization.

677337721653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162212.

The product of its digits is 23337720, while the sum is 57.

The spelling of 677337721653 in words is "six hundred seventy-seven billion, three hundred thirty-seven million, seven hundred twenty-one thousand, six hundred fifty-three".