245131552129 has 2 divisors, whose sum is σ = 245131552130. Its totient is φ = 245131552128.

The previous prime is 245131552033. The next prime is 245131552151. The reversal of 245131552129 is 921255131542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216665113729 + 28466438400 = 465473^2 + 168720^2 .

It is a cyclic number.

It is not a de Polignac number, because 245131552129 - 2¹⁷ = 245131421057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245131552091 and 245131552100.

It is not a weakly prime, because it can be changed into another prime (245131552829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122565776064 + 122565776065.

It is an arithmetic number, because the mean of its divisors is an integer number (122565776065).

Almost surely, 2^245131552129 is an apocalyptic number.

It is an amenable number.

245131552129 is a deficient number, since it is larger than the sum of its proper divisors (1).

245131552129 is an equidigital number, since it uses as much as digits as its factorization.

245131552129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 40.

The spelling of 245131552129 in words is "two hundred forty-five billion, one hundred thirty-one million, five hundred fifty-two thousand, one hundred twenty-nine".