605155121551523 has 2 divisors, whose sum is σ = 605155121551524. Its totient is φ = 605155121551522.

The previous prime is 605155121551489. The next prime is 605155121551543. The reversal of 605155121551523 is 325155121551506.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 605155121551523 - 2⁶ = 605155121551459 is a prime.

It is a super-2 number, since 2×605155121551523² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (605155121551543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302577560775761 + 302577560775762.

It is an arithmetic number, because the mean of its divisors is an integer number (302577560775762).

Almost surely, 2^{605155121551523} is an apocalyptic number.

605155121551523 is a deficient number, since it is larger than the sum of its proper divisors (1).

605155121551523 is an equidigital number, since it uses as much as digits as its factorization.

605155121551523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125000, while the sum is 47.

The spelling of 605155121551523 in words is "six hundred five trillion, one hundred fifty-five billion, one hundred twenty-one million, five hundred fifty-one thousand, five hundred twenty-three".