389232465120661 has 4 divisors (see below), whose sum is σ = 389265061436524. Its totient is φ = 389199868804800.

The previous prime is 389232465120559. The next prime is 389232465120689. The reversal of 389232465120661 is 166021564232983.

It is a happy number.

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 72079998120036 + 317152467000625 = 8489994^2 + 17808775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389232465120661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389232465120596 and 389232465120605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389232465220661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16298140020 + ... + 16298163901.

It is an arithmetic number, because the mean of its divisors is an integer number (97316265359131).

Almost surely, 2^{389232465120661} is an apocalyptic number.

It is an amenable number.

389232465120661 is a deficient number, since it is larger than the sum of its proper divisors (32596315863).

389232465120661 is a wasteful number, since it uses less digits than its factorization.

389232465120661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32596315862.

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 389232465120661 in words is "three hundred eighty-nine trillion, two hundred thirty-two billion, four hundred sixty-five million, one hundred twenty thousand, six hundred sixty-one".