1205648355667 has 6 divisors (see below), whose sum is σ = 1402488903588. Its totient is φ = 1033412876244.

The previous prime is 1205648355607. The next prime is 1205648355673. The reversal of 1205648355667 is 7665538465021.

It is a happy number.

It is not a de Polignac number, because 1205648355667 - 2²⁷ = 1205514137939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205648355607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12302534193 + ... + 12302534290.

It is an arithmetic number, because the mean of its divisors is an integer number (233748150598).

Almost surely, 2^{1205648355667} is an apocalyptic number.

1205648355667 is a deficient number, since it is larger than the sum of its proper divisors (196840547921).

1205648355667 is an equidigital number, since it uses as much as digits as its factorization.

1205648355667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24605068497 (or 24605068490 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 58.

The spelling of 1205648355667 in words is "one trillion, two hundred five billion, six hundred forty-eight million, three hundred fifty-five thousand, six hundred sixty-seven".