1667651122356 has 48 divisors (see below), whose sum is σ = 3928264046784. Its totient is φ = 550588720896.

The previous prime is 1667651122339. The next prime is 1667651122369. The reversal of 1667651122356 is 6532211567661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1667651122299 and 1667651122308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7143576 + ... + 7373328.

It is an arithmetic number, because the mean of its divisors is an integer number (81838834308).

Almost surely, 2^{1667651122356} is an apocalyptic number.

It is an amenable number.

1667651122356 is an abundant number, since it is smaller than the sum of its proper divisors (2260612924428).

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

1667651122356 is a wasteful number, since it uses less digits than its factorization.

1667651122356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235520 (or 235518 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The spelling of 1667651122356 in words is "one trillion, six hundred sixty-seven billion, six hundred fifty-one million, one hundred twenty-two thousand, three hundred fifty-six".