7643162449129 has 9 divisors (see below), whose sum is σ = 7671050767863. Its totient is φ = 7615375183152.

The previous prime is 7643162449123. The next prime is 7643162449147. The reversal of 7643162449129 is 9219442613467.

The square root of 7643162449129 is 2764627.

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., 2619467799529 + 5023694649600 = 1618477^2 + 2241360^2 .

It is not a de Polignac number, because 7643162449129 - 2¹⁹ = 7643161924841 is a prime.

It is a super-2 number, since 2×7643162449129² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7643162449123) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 782384557 + ... + 782394325.

It is an arithmetic number, because the mean of its divisors is an integer number (852338974207).

Almost surely, 2^{7643162449129} is an apocalyptic number.

7643162449129 is the 2764627-th square number.

7643162449129 is the 1382314-th centered octagonal number.

It is an amenable number.

7643162449129 is a deficient number, since it is larger than the sum of its proper divisors (27888318734).

7643162449129 is an frugal number, since it uses more digits than its factorization.

7643162449129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20104 (or 10052 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 58.

The spelling of 7643162449129 in words is "seven trillion, six hundred forty-three billion, one hundred sixty-two million, four hundred forty-nine thousand, one hundred twenty-nine".