245456309697 has 8 divisors (see below), whose sum is σ = 327300717120. Its totient is φ = 163624721040.

The previous prime is 245456309677. The next prime is 245456309699. The reversal of 245456309697 is 796903654542.

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

It is not a de Polignac number, because 245456309697 - 2¹⁶ = 245456244161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245456309697.

It is not an unprimeable number, because it can be changed into a prime (245456309699) 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 7 ways as a sum of consecutive naturals, for example, 3159922 + ... + 3236667.

It is an arithmetic number, because the mean of its divisors is an integer number (40912589640).

Almost surely, 2^245456309697 is an apocalyptic number.

It is an amenable number.

245456309697 is a deficient number, since it is larger than the sum of its proper divisors (81844407423).

245456309697 is a wasteful number, since it uses less digits than its factorization.

245456309697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6409383.

The product of its (nonzero) digits is 48988800, while the sum is 60.

The spelling of 245456309697 in words is "two hundred forty-five billion, four hundred fifty-six million, three hundred nine thousand, six hundred ninety-seven".