207717641267257 has 12 divisors (see below), whose sum is σ = 228330634484848. Its totient is φ = 188823553003800.

The previous prime is 207717641267237. The next prime is 207717641267287. The reversal of 207717641267257 is 752762146717702.

It is not a de Polignac number, because 207717641267257 - 2³⁹ = 207167885453369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207717641267237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46331919 + ... + 50617012.

Almost surely, 2^{207717641267257} is an apocalyptic number.

It is an amenable number.

207717641267257 is a deficient number, since it is larger than the sum of its proper divisors (20612993217591).

207717641267257 is a wasteful number, since it uses less digits than its factorization.

207717641267257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96966660 (or 96966649 counting only the distinct ones).

The product of its (nonzero) digits is 96808320, while the sum is 64.

The spelling of 207717641267257 in words is "two hundred seven trillion, seven hundred seventeen billion, six hundred forty-one million, two hundred sixty-seven thousand, two hundred fifty-seven".