17957145916963 has 12 divisors (see below), whose sum is σ = 19742168039440. Its totient is φ = 16321247308080.

The previous prime is 17957145916937. The next prime is 17957145916979. The reversal of 17957145916963 is 36961954175971.

It is a de Polignac number, because none of the positive numbers 2^k-17957145916963 is a prime.

It is a super-2 number, since 2×17957145916963² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (17957145916663) 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, 15016320 + ... + 16167997.

Almost surely, 2^{17957145916963} is an apocalyptic number.

17957145916963 is a deficient number, since it is larger than the sum of its proper divisors (1785022122477).

17957145916963 is a wasteful number, since it uses less digits than its factorization.

17957145916963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31189098 (or 31189087 counting only the distinct ones).

The product of its digits is 385786800, while the sum is 73.

The spelling of 17957145916963 in words is "seventeen trillion, nine hundred fifty-seven billion, one hundred forty-five million, nine hundred sixteen thousand, nine hundred sixty-three".