4479195037661 has 4 divisors (see below), whose sum is σ = 4479206850300. Its totient is φ = 4479183225024.

The previous prime is 4479195037649. The next prime is 4479195037687. The reversal of 4479195037661 is 1667305919744.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1049253997561 + 3429941040100 = 1024331^2 + 1852010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4479195037661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4479195037594 and 4479195037603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4479195037861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5318006 + ... + 6102423.

It is an arithmetic number, because the mean of its divisors is an integer number (1119801712575).

Almost surely, 2^{4479195037661} is an apocalyptic number.

It is an amenable number.

4479195037661 is a deficient number, since it is larger than the sum of its proper divisors (11812639).

4479195037661 is a wasteful number, since it uses less digits than its factorization.

4479195037661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11812638.

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 4479195037661 in words is "four trillion, four hundred seventy-nine billion, one hundred ninety-five million, thirty-seven thousand, six hundred sixty-one".