7192144661 has 12 divisors (see below), whose sum is σ = 8246061252. Its totient is φ = 6248376576.

The previous prime is 7192144657. The next prime is 7192144667. The reversal of 7192144661 is 1664412917.

It can be written as a sum of positive squares in 6 ways, for example, as 1613548561 + 5578596100 = 40169^2 + 74690^2 .

It is not a de Polignac number, because 7192144661 - 2² = 7192144657 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7192144667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1248806 + ... + 1254551.

It is an arithmetic number, because the mean of its divisors is an integer number (687171771).

Almost surely, 2^7192144661 is an apocalyptic number.

It is an amenable number.

7192144661 is a deficient number, since it is larger than the sum of its proper divisors (1053916591).

7192144661 is a wasteful number, since it uses less digits than its factorization.

7192144661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503400 (or 2503387 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 7192144661 is about 84806.5130812487. The cubic root of 7192144661 is about 1930.2762686301.

The spelling of 7192144661 in words is "seven billion, one hundred ninety-two million, one hundred forty-four thousand, six hundred sixty-one".