6555565660151 has 4 divisors (see below), whose sum is σ = 6634548379032. Its totient is φ = 6476582941272.

The previous prime is 6555565660139. The next prime is 6555565660169. The reversal of 6555565660151 is 1510665655556.

6555565660151 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6555565660151 - 2¹⁸ = 6555565398007 is a prime.

It is a super-2 number, since 2×6555565660151² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6555565669151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39491359316 + ... + 39491359481.

It is an arithmetic number, because the mean of its divisors is an integer number (1658637094758).

Almost surely, 2^{6555565660151} is an apocalyptic number.

6555565660151 is a deficient number, since it is larger than the sum of its proper divisors (78982718881).

6555565660151 is an equidigital number, since it uses as much as digits as its factorization.

6555565660151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78982718880.

The product of its (nonzero) digits is 20250000, while the sum is 56.

The spelling of 6555565660151 in words is "six trillion, five hundred fifty-five billion, five hundred sixty-five million, six hundred sixty thousand, one hundred fifty-one".