7149452661 has 16 divisors (see below), whose sum is σ = 11406534720. Its totient is φ = 4399662960.

The previous prime is 7149452623. The next prime is 7149452669. The reversal of 7149452661 is 1662549417.

It is a de Polignac number, because none of the positive numbers 2^k-7149452661 is a prime.

It is a super-2 number, since 2×7149452661² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7149452669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10184055 + ... + 10184756.

It is an arithmetic number, because the mean of its divisors is an integer number (712908420).

Almost surely, 2^7149452661 is an apocalyptic number.

It is an amenable number.

7149452661 is a deficient number, since it is larger than the sum of its proper divisors (4257082059).

7149452661 is a wasteful number, since it uses less digits than its factorization.

7149452661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20368833 (or 20368827 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 7149452661 is about 84554.4360811424. The cubic root of 7149452661 is about 1926.4493642919.

The spelling of 7149452661 in words is "seven billion, one hundred forty-nine million, four hundred fifty-two thousand, six hundred sixty-one".