8155462273729 has 27 divisors (see below), whose sum is σ = 8399273270787. Its totient is φ = 7918681235328.

The previous prime is 8155462273703. The next prime is 8155462273741. The reversal of 8155462273729 is 9273722645518.

It is a happy number.

The square root of 8155462273729 is 2855777.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3662113732225 + 4493348541504 = 1913665^2 + 2119752^2 .

It is not a de Polignac number, because 8155462273729 - 2⁷ = 8155462273601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8155462273799) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 16343611522 + ... + 16343612020.

Almost surely, 2^{8155462273729} is an apocalyptic number.

8155462273729 is the 2855777-th square number.

8155462273729 is the 1427889-th centered octagonal number.

It is an amenable number.

8155462273729 is a deficient number, since it is larger than the sum of its proper divisors (243810997058).

8155462273729 is an frugal number, since it uses more digits than its factorization.

8155462273729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310 (or 655 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 61.

The spelling of 8155462273729 in words is "eight trillion, one hundred fifty-five billion, four hundred sixty-two million, two hundred seventy-three thousand, seven hundred twenty-nine".