120554055553 has 2 divisors, whose sum is σ = 120554055554. Its totient is φ = 120554055552.

The previous prime is 120554055521. The next prime is 120554055563. The reversal of 120554055553 is 355550455021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71017986064 + 49536069489 = 266492^2 + 222567^2 .

It is an emirp because it is prime and its reverse (355550455021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120554055553 - 2⁵ = 120554055521 is a prime.

It is not a weakly prime, because it can be changed into another prime (120554055563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60277027776 + 60277027777.

It is an arithmetic number, because the mean of its divisors is an integer number (60277027777).

Almost surely, 2^120554055553 is an apocalyptic number.

It is an amenable number.

120554055553 is a deficient number, since it is larger than the sum of its proper divisors (1).

120554055553 is an equidigital number, since it uses as much as digits as its factorization.

120554055553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 375000, while the sum is 40.

The spelling of 120554055553 in words is "one hundred twenty billion, five hundred fifty-four million, fifty-five thousand, five hundred fifty-three".