677138225550 has 48 divisors (see below), whose sum is σ = 1679358399600. Its totient is φ = 180564215040.

The previous prime is 677138225531. The next prime is 677138225573. The reversal of 677138225550 is 55522831776.

It is a happy number.

677138225550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 677138225493 and 677138225502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6248226 + ... + 6355674.

It is an arithmetic number, because the mean of its divisors is an integer number (34986633325).

Almost surely, 2^677138225550 is an apocalyptic number.

677138225550 is an abundant number, since it is smaller than the sum of its proper divisors (1002220174050).

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

677138225550 is a wasteful number, since it uses less digits than its factorization.

677138225550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149477 (or 149472 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 51.

The spelling of 677138225550 in words is "six hundred seventy-seven billion, one hundred thirty-eight million, two hundred twenty-five thousand, five hundred fifty".