245640736407 has 8 divisors (see below), whose sum is σ = 357295616640. Its totient is φ = 148873173560.

The previous prime is 245640736387. The next prime is 245640736417. The reversal of 245640736407 is 704637046542.

245640736407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245640736407 - 2¹⁶ = 245640670871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245640736417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3721829307 + ... + 3721829372.

It is an arithmetic number, because the mean of its divisors is an integer number (44661952080).

Almost surely, 2^245640736407 is an apocalyptic number.

245640736407 is a deficient number, since it is larger than the sum of its proper divisors (111654880233).

245640736407 is a wasteful number, since it uses less digits than its factorization.

245640736407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7443658693.

The product of its (nonzero) digits is 3386880, while the sum is 48.

The spelling of 245640736407 in words is "two hundred forty-five billion, six hundred forty million, seven hundred thirty-six thousand, four hundred seven".