120386231561 has 8 divisors (see below), whose sum is σ = 127585059840. Its totient is φ = 113200435008.

The previous prime is 120386231557. The next prime is 120386231621. The reversal of 120386231561 is 165132683021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120386231561 - 2² = 120386231557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120386231501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3238901 + ... + 3275858.

It is an arithmetic number, because the mean of its divisors is an integer number (15948132480).

Almost surely, 2^120386231561 is an apocalyptic number.

It is an amenable number.

120386231561 is a deficient number, since it is larger than the sum of its proper divisors (7198828279).

120386231561 is a wasteful number, since it uses less digits than its factorization.

120386231561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6515863.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 120386231561 in words is "one hundred twenty billion, three hundred eighty-six million, two hundred thirty-one thousand, five hundred sixty-one".