8051447723761 has 4 divisors (see below), whose sum is σ = 8670789856372. Its totient is φ = 7432105591152.

The previous prime is 8051447723741. The next prime is 8051447723789. The reversal of 8051447723761 is 1673277441508.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5243664909025 + 2807782814736 = 2289905^2 + 1675644^2 .

It is a cyclic number.

It is not a de Polignac number, because 8051447723761 - 2¹⁹ = 8051447199473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8051447723701) 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, 309671066286 + ... + 309671066311.

It is an arithmetic number, because the mean of its divisors is an integer number (2167697464093).

Almost surely, 2^{8051447723761} is an apocalyptic number.

It is an amenable number.

8051447723761 is a deficient number, since it is larger than the sum of its proper divisors (619342132611).

8051447723761 is a wasteful number, since it uses less digits than its factorization.

8051447723761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619342132610.

The product of its (nonzero) digits is 7902720, while the sum is 55.

The spelling of 8051447723761 in words is "eight trillion, fifty-one billion, four hundred forty-seven million, seven hundred twenty-three thousand, seven hundred sixty-one".