7143649745 has 4 divisors (see below), whose sum is σ = 8572379700. Its totient is φ = 5714919792.

The previous prime is 7143649699. The next prime is 7143649763. The reversal of 7143649745 is 5479463417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5479463417 = 1831 ⋅2992607.

It can be written as a sum of positive squares in 2 ways, for example, as 3592324096 + 3551325649 = 59936^2 + 59593^2 .

It is a cyclic number.

It is not a de Polignac number, because 7143649745 - 2¹⁴ = 7143633361 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7143649693 and 7143649702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714364970 + ... + 714364979.

It is an arithmetic number, because the mean of its divisors is an integer number (2143094925).

Almost surely, 2^7143649745 is an apocalyptic number.

It is an amenable number.

7143649745 is a deficient number, since it is larger than the sum of its proper divisors (1428729955).

7143649745 is a wasteful number, since it uses less digits than its factorization.

7143649745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428729954.

The product of its digits is 2540160, while the sum is 50.

The square root of 7143649745 is about 84520.1144402917. The cubic root of 7143649745 is about 1925.9280167029.

The spelling of 7143649745 in words is "seven billion, one hundred forty-three million, six hundred forty-nine thousand, seven hundred forty-five".