677643211953 has 16 divisors (see below), whose sum is σ = 1062969744960. Its totient is φ = 425187897408.

The previous prime is 677643211939. The next prime is 677643212011. The reversal of 677643211953 is 359112346776.

677643211953 is a `hidden beast` number, since 6 + 77 + 64 + 321 + 195 + 3 = 666.

It is not a de Polignac number, because 677643211953 - 2¹⁰ = 677643210929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 677643211953.

It is not an unprimeable number, because it can be changed into a prime (677643210953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738172975 + ... + 738173892.

It is an arithmetic number, because the mean of its divisors is an integer number (66435609060).

Almost surely, 2^677643211953 is an apocalyptic number.

It is an amenable number.

677643211953 is a deficient number, since it is larger than the sum of its proper divisors (385326533007).

677643211953 is a wasteful number, since it uses less digits than its factorization.

677643211953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476346893 (or 1476346887 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The spelling of 677643211953 in words is "six hundred seventy-seven billion, six hundred forty-three million, two hundred eleven thousand, nine hundred fifty-three".