7149511256449 has 3 divisors (see below), whose sum is σ = 7149513930307. Its totient is φ = 7149508582592.

The previous prime is 7149511256423. The next prime is 7149511256479. The reversal of 7149511256449 is 9446521159417.

The square root of 7149511256449 is 2673857.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 6764654801025 + 384856455424 = 2600895^2 + 620368^2 .

It is not a de Polignac number, because 7149511256449 - 2⁹ = 7149511255937 is a prime.

It is a super-2 number, since 2×7149511256449² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7149511256393 and 7149511256402.

It is not an unprimeable number, because it can be changed into a prime (7149511256479) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1336929 + ... + 4010785.

Almost surely, 2^{7149511256449} is an apocalyptic number.

7149511256449 is the 2673857-th square number.

7149511256449 is the 1336929-th centered octagonal number.

It is an amenable number.

7149511256449 is a deficient number, since it is larger than the sum of its proper divisors (2673858).

7149511256449 is an frugal number, since it uses more digits than its factorization.

7149511256449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5347714 (or 2673857 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 58.

The spelling of 7149511256449 in words is "seven trillion, one hundred forty-nine billion, five hundred eleven million, two hundred fifty-six thousand, four hundred forty-nine".