163660346642 has 24 divisors (see below), whose sum is σ = 266444017920. Its totient is φ = 75360221040.

The previous prime is 163660346627. The next prime is 163660346711. The reversal of 163660346642 is 246643066361.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416042 + ... + 707397.

It is an arithmetic number, because the mean of its divisors is an integer number (11101834080).

Almost surely, 2^163660346642 is an apocalyptic number.

163660346642 is a deficient number, since it is larger than the sum of its proper divisors (102783671278).

163660346642 is a wasteful number, since it uses less digits than its factorization.

163660346642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123898 (or 1123885 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 47.

The spelling of 163660346642 in words is "one hundred sixty-three billion, six hundred sixty million, three hundred forty-six thousand, six hundred forty-two".