120603615581 has 2 divisors, whose sum is σ = 120603615582. Its totient is φ = 120603615580.

The previous prime is 120603615563. The next prime is 120603615607. The reversal of 120603615581 is 185516306021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120033838681 + 569776900 = 346459^2 + 23870^2 .

It is a cyclic number.

It is not a de Polignac number, because 120603615581 - 2¹⁴ = 120603599197 is a prime.

It is a super-2 number, since 2×120603615581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120603618581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60301807790 + 60301807791.

It is an arithmetic number, because the mean of its divisors is an integer number (60301807791).

Almost surely, 2^120603615581 is an apocalyptic number.

It is an amenable number.

120603615581 is a deficient number, since it is larger than the sum of its proper divisors (1).

120603615581 is an equidigital number, since it uses as much as digits as its factorization.

120603615581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 120603615581 in words is "one hundred twenty billion, six hundred three million, six hundred fifteen thousand, five hundred eighty-one".