245644155107 has 4 divisors (see below), whose sum is σ = 264539859360. Its totient is φ = 226748450856.

The previous prime is 245644155083. The next prime is 245644155151. The reversal of 245644155107 is 701551446542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 701551446542 = 2 ⋅350775723271.

It is a cyclic number.

It is not a de Polignac number, because 245644155107 - 2¹⁶ = 245644089571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245644155007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9447852107 + ... + 9447852132.

It is an arithmetic number, because the mean of its divisors is an integer number (66134964840).

Almost surely, 2^245644155107 is an apocalyptic number.

245644155107 is a deficient number, since it is larger than the sum of its proper divisors (18895704253).

245644155107 is a wasteful number, since it uses less digits than its factorization.

245644155107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18895704252.

The product of its (nonzero) digits is 672000, while the sum is 44.

The spelling of 245644155107 in words is "two hundred forty-five billion, six hundred forty-four million, one hundred fifty-five thousand, one hundred seven".