245974326409 has 4 divisors (see below), whose sum is σ = 281113515904. Its totient is φ = 210835136916.

The previous prime is 245974326347. The next prime is 245974326461. The reversal of 245974326409 is 904623479542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245974326409 - 2¹³ = 245974318217 is a prime.

It is a super-2 number, since 2×245974326409² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245974326409.

It is not an unprimeable number, because it can be changed into a prime (245974327409) 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, 17569594737 + ... + 17569594750.

It is an arithmetic number, because the mean of its divisors is an integer number (70278378976).

Almost surely, 2^245974326409 is an apocalyptic number.

It is an amenable number.

245974326409 is a deficient number, since it is larger than the sum of its proper divisors (35139189495).

245974326409 is an equidigital number, since it uses as much as digits as its factorization.

245974326409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35139189494.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 245974326409 in words is "two hundred forty-five billion, nine hundred seventy-four million, three hundred twenty-six thousand, four hundred nine".