677120665018 has 128 divisors (see below), whose sum is σ = 1290987072000. Its totient is φ = 265134449664.

The previous prime is 677120664991. The next prime is 677120665043. The reversal of 677120665018 is 810566021776.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 219628905 + ... + 219631987.

It is an arithmetic number, because the mean of its divisors is an integer number (10085836500).

Almost surely, 2^677120665018 is an apocalyptic number.

677120665018 is a deficient number, since it is larger than the sum of its proper divisors (613866406982).

677120665018 is a wasteful number, since it uses less digits than its factorization.

677120665018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669 (or 3655 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 677120665018 in words is "six hundred seventy-seven billion, one hundred twenty million, six hundred sixty-five thousand, eighteen".