1667730660055 has 16 divisors (see below), whose sum is σ = 2114334990720. Its totient is φ = 1260770113792.

The previous prime is 1667730660047. The next prime is 1667730660091. The reversal of 1667730660055 is 5500660377661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1667730660055 - 2³ = 1667730660047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1667730659984 and 1667730660011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122350534 + ... + 122364163.

It is an arithmetic number, because the mean of its divisors is an integer number (132145936920).

Almost surely, 2^{1667730660055} is an apocalyptic number.

1667730660055 is a deficient number, since it is larger than the sum of its proper divisors (446604330665).

1667730660055 is a wasteful number, since it uses less digits than its factorization.

1667730660055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244714778.

The product of its (nonzero) digits is 4762800, while the sum is 52.

The spelling of 1667730660055 in words is "one trillion, six hundred sixty-seven billion, seven hundred thirty million, six hundred sixty thousand, fifty-five".