4155366681551 has 4 divisors (see below), whose sum is σ = 4179386142312. Its totient is φ = 4131347220792.

The previous prime is 4155366681541. The next prime is 4155366681601. The reversal of 4155366681551 is 1551866635514.

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 4155366681551 - 2³⁸ = 3880488774607 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 (4155366681541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12009730121 + ... + 12009730466.

It is an arithmetic number, because the mean of its divisors is an integer number (1044846535578).

Almost surely, 2^{4155366681551} is an apocalyptic number.

4155366681551 is a deficient number, since it is larger than the sum of its proper divisors (24019460761).

4155366681551 is a wasteful number, since it uses less digits than its factorization.

4155366681551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24019460760.

The product of its digits is 12960000, while the sum is 56.

The spelling of 4155366681551 in words is "four trillion, one hundred fifty-five billion, three hundred sixty-six million, six hundred eighty-one thousand, five hundred fifty-one".