120386231557 has 2 divisors, whose sum is σ = 120386231558. Its totient is φ = 120386231556.

The previous prime is 120386231551. The next prime is 120386231621. The reversal of 120386231557 is 755132683021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60397486081 + 59988745476 = 245759^2 + 244926^2 .

It is a cyclic number.

It is not a de Polignac number, because 120386231557 - 2⁷ = 120386231429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120386231551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60193115778 + 60193115779.

It is an arithmetic number, because the mean of its divisors is an integer number (60193115779).

Almost surely, 2^120386231557 is an apocalyptic number.

It is an amenable number.

120386231557 is a deficient number, since it is larger than the sum of its proper divisors (1).

120386231557 is an equidigital number, since it uses as much as digits as its factorization.

120386231557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 120386231557 in words is "one hundred twenty billion, three hundred eighty-six million, two hundred thirty-one thousand, five hundred fifty-seven".