1655551216011 has 16 divisors (see below), whose sum is σ = 2752085138688. Its totient is φ = 860026605600.

The previous prime is 1655551215949. The next prime is 1655551216037. The reversal of 1655551216011 is 1106121555561.

It is not a de Polignac number, because 1655551216011 - 2¹¹ = 1655551213963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1655551216091) 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 15 ways as a sum of consecutive naturals, for example, 3583443960 + ... + 3583444421.

It is an arithmetic number, because the mean of its divisors is an integer number (172005321168).

Almost surely, 2^{1655551216011} is an apocalyptic number.

1655551216011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1655551216011 is a deficient number, since it is larger than the sum of its proper divisors (1096533922677).

1655551216011 is a wasteful number, since it uses less digits than its factorization.

1655551216011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7166888402.

The product of its (nonzero) digits is 45000, while the sum is 39.

The spelling of 1655551216011 in words is "one trillion, six hundred fifty-five billion, five hundred fifty-one million, two hundred sixteen thousand, eleven".