6181556344801 has 4 divisors (see below), whose sum is σ = 6506901415600. Its totient is φ = 5856211274004.

The previous prime is 6181556344759. The next prime is 6181556344823. The reversal of 6181556344801 is 1084436551816.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6181556344801 - 2²⁵ = 6181522790369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6181556344861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162672535371 + ... + 162672535408.

It is an arithmetic number, because the mean of its divisors is an integer number (1626725353900).

Almost surely, 2^{6181556344801} is an apocalyptic number.

It is an amenable number.

6181556344801 is a deficient number, since it is larger than the sum of its proper divisors (325345070799).

6181556344801 is a wasteful number, since it uses less digits than its factorization.

6181556344801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325345070798.

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 6181556344801 in words is "six trillion, one hundred eighty-one billion, five hundred fifty-six million, three hundred forty-four thousand, eight hundred one".