245123033129 has 4 divisors (see below), whose sum is σ = 263978651076. Its totient is φ = 226267415184.

The previous prime is 245123033063. The next prime is 245123033161. The reversal of 245123033129 is 921330321542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 131232307600 + 113890725529 = 362260^2 + 337477^2 .

It is a cyclic number.

It is not a de Polignac number, because 245123033129 - 2¹² = 245123029033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245123033929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9427808954 + ... + 9427808979.

It is an arithmetic number, because the mean of its divisors is an integer number (65994662769).

Almost surely, 2^245123033129 is an apocalyptic number.

It is an amenable number.

245123033129 is a deficient number, since it is larger than the sum of its proper divisors (18855617947).

245123033129 is a wasteful number, since it uses less digits than its factorization.

245123033129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18855617946.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 245123033129 in words is "two hundred forty-five billion, one hundred twenty-three million, thirty-three thousand, one hundred twenty-nine".