1655342613661 has 8 divisors (see below), whose sum is σ = 1812254744448. Its totient is φ = 1499501556000.

The previous prime is 1655342613641. The next prime is 1655342613667. The reversal of 1655342613661 is 1663162435561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1655342613661 - 2¹⁷ = 1655342482589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655342613667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267765045 + ... + 267771226.

It is an arithmetic number, because the mean of its divisors is an integer number (226531843056).

Almost surely, 2^{1655342613661} is an apocalyptic number.

1655342613661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1655342613661 is a deficient number, since it is larger than the sum of its proper divisors (156912130787).

1655342613661 is a wasteful number, since it uses less digits than its factorization.

1655342613661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535536563.

The product of its digits is 2332800, while the sum is 49.

The spelling of 1655342613661 in words is "one trillion, six hundred fifty-five billion, three hundred forty-two million, six hundred thirteen thousand, six hundred sixty-one".