6166763756421 has 4 divisors (see below), whose sum is σ = 8222351675232. Its totient is φ = 4111175837612.

The previous prime is 6166763756297. The next prime is 6166763756497. The reversal of 6166763756421 is 1246573676616.

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 6166763756421 - 2¹⁷ = 6166763625349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6166763356421) 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, 1027793959401 + ... + 1027793959406.

It is an arithmetic number, because the mean of its divisors is an integer number (2055587918808).

Almost surely, 2^{6166763756421} is an apocalyptic number.

It is an amenable number.

6166763756421 is a deficient number, since it is larger than the sum of its proper divisors (2055587918811).

6166763756421 is a wasteful number, since it uses less digits than its factorization.

6166763756421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055587918810.

The product of its digits is 45722880, while the sum is 60.

The spelling of 6166763756421 in words is "six trillion, one hundred sixty-six billion, seven hundred sixty-three million, seven hundred fifty-six thousand, four hundred twenty-one".