168748477642 has 32 divisors (see below), whose sum is σ = 263128102272. Its totient is φ = 81100678464.

The previous prime is 168748477621. The next prime is 168748477669. The reversal of 168748477642 is 246774847861.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 1972468 + ... + 2056240.

It is an arithmetic number, because the mean of its divisors is an integer number (8222753196).

Almost surely, 2^168748477642 is an apocalyptic number.

168748477642 is a deficient number, since it is larger than the sum of its proper divisors (94379624630).

168748477642 is a wasteful number, since it uses less digits than its factorization.

168748477642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84142.

The product of its digits is 101154816, while the sum is 64.

The spelling of 168748477642 in words is "one hundred sixty-eight billion, seven hundred forty-eight million, four hundred seventy-seven thousand, six hundred forty-two".