245374363261 has 4 divisors (see below), whose sum is σ = 245623982112. Its totient is φ = 245124744412.

The previous prime is 245374363259. The next prime is 245374363277. The reversal of 245374363261 is 162363473542.

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 245374363261 - 2¹ = 245374363259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245374363291) 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, 124807951 + ... + 124809916.

It is an arithmetic number, because the mean of its divisors is an integer number (61405995528).

Almost surely, 2^245374363261 is an apocalyptic number.

It is an amenable number.

245374363261 is a deficient number, since it is larger than the sum of its proper divisors (249618851).

245374363261 is an equidigital number, since it uses as much as digits as its factorization.

245374363261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249618850.

The product of its digits is 2177280, while the sum is 46.

The spelling of 245374363261 in words is "two hundred forty-five billion, three hundred seventy-four million, three hundred sixty-three thousand, two hundred sixty-one".