245446340077 has 4 divisors (see below), whose sum is σ = 247093631100. Its totient is φ = 243799049056.

The previous prime is 245446340047. The next prime is 245446340107. The reversal of 245446340077 is 770043644542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 770043644542 = 2 ⋅385021822271.

It is an interprime number because it is at equal distance from previous prime (245446340047) and next prime (245446340107).

It can be written as a sum of positive squares in 2 ways, for example, as 15678545796 + 229767794281 = 125214^2 + 479341^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245446340077 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 (245446340047) 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, 823645288 + ... + 823645585.

It is an arithmetic number, because the mean of its divisors is an integer number (61773407775).

Almost surely, 2^245446340077 is an apocalyptic number.

It is an amenable number.

245446340077 is a deficient number, since it is larger than the sum of its proper divisors (1647291023).

245446340077 is a wasteful number, since it uses less digits than its factorization.

245446340077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647291022.

The product of its (nonzero) digits is 2257920, while the sum is 46.

The spelling of 245446340077 in words is "two hundred forty-five billion, four hundred forty-six million, three hundred forty thousand, seventy-seven".