677781018054 has 96 divisors (see below), whose sum is σ = 1689346264320. Its totient is φ = 192381811776.

The previous prime is 677781017911. The next prime is 677781018077. The reversal of 677781018054 is 450810187776.

It is a super-3 number, since 3×677781018054³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 16933437 + ... + 16973415.

It is an arithmetic number, because the mean of its divisors is an integer number (17597356920).

Almost surely, 2^677781018054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677781018054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (844673132160).

677781018054 is an abundant number, since it is smaller than the sum of its proper divisors (1011565246266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

677781018054 is a wasteful number, since it uses less digits than its factorization.

677781018054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40874 (or 40871 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 54.

The spelling of 677781018054 in words is "six hundred seventy-seven billion, seven hundred eighty-one million, eighteen thousand, fifty-four".