306555206061 has 16 divisors (see below), whose sum is σ = 440460695360. Its totient is φ = 188529845760.

The previous prime is 306555206059. The next prime is 306555206099. The reversal of 306555206061 is 160602555603.

It is not a de Polignac number, because 306555206061 - 2¹ = 306555206059 is a prime.

It is a super-2 number, since 2×306555206061² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306555206261) 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, 2427460 + ... + 2550621.

It is an arithmetic number, because the mean of its divisors is an integer number (27528793460).

Almost surely, 2^306555206061 is an apocalyptic number.

It is an amenable number.

306555206061 is a deficient number, since it is larger than the sum of its proper divisors (133905489299).

306555206061 is a wasteful number, since it uses less digits than its factorization.

306555206061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4979676.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 306555206061 in words is "three hundred six billion, five hundred fifty-five million, two hundred six thousand, sixty-one".