1017668517685 has 16 divisors (see below), whose sum is σ = 1223240604480. Its totient is φ = 812777011200.

The previous prime is 1017668517661. The next prime is 1017668517751. The reversal of 1017668517685 is 5867158667101.

It is not a de Polignac number, because 1017668517685 - 2¹⁷ = 1017668386613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7335574 + ... + 7473016.

It is an arithmetic number, because the mean of its divisors is an integer number (76452537780).

Almost surely, 2^{1017668517685} is an apocalyptic number.

It is an amenable number.

1017668517685 is a deficient number, since it is larger than the sum of its proper divisors (205572086795).

1017668517685 is a wasteful number, since it uses less digits than its factorization.

1017668517685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139908.

The product of its (nonzero) digits is 16934400, while the sum is 61.

The spelling of 1017668517685 in words is "one trillion, seventeen billion, six hundred sixty-eight million, five hundred seventeen thousand, six hundred eighty-five".