168661901024 has 12 divisors (see below), whose sum is σ = 332053117704. Its totient is φ = 84330950496.

The previous prime is 168661900999. The next prime is 168661901027. The reversal of 168661901024 is 420109166861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168661901027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2635342172 + ... + 2635342235.

It is an arithmetic number, because the mean of its divisors is an integer number (27671093142).

Almost surely, 2^168661901024 is an apocalyptic number.

It is an amenable number.

168661901024 is a deficient number, since it is larger than the sum of its proper divisors (163391216680).

168661901024 is an equidigital number, since it uses as much as digits as its factorization.

168661901024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270684417 (or 5270684409 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 168661901024 in words is "one hundred sixty-eight billion, six hundred sixty-one million, nine hundred one thousand, twenty-four".