257067117072645 has 64 divisors (see below), whose sum is σ = 449368650823680. Its totient is φ = 124452595641600.

The previous prime is 257067117072527. The next prime is 257067117072697. The reversal of 257067117072645 is 546270711760752.

It is not a de Polignac number, because 257067117072645 - 2⁹ = 257067117072133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3689376547 + ... + 3689446223.

It is an arithmetic number, because the mean of its divisors is an integer number (7021385169120).

Almost surely, 2^{257067117072645} is an apocalyptic number.

It is an amenable number.

257067117072645 is a deficient number, since it is larger than the sum of its proper divisors (192301533751035).

257067117072645 is a wasteful number, since it uses less digits than its factorization.

257067117072645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102746.

The product of its (nonzero) digits is 34574400, while the sum is 60.

The spelling of 257067117072645 in words is "two hundred fifty-seven trillion, sixty-seven billion, one hundred seventeen million, seventy-two thousand, six hundred forty-five".