201670351842 has 8 divisors (see below), whose sum is σ = 403340703696. Its totient is φ = 67223450612.

The previous prime is 201670351837. The next prime is 201670351849. The reversal of 201670351842 is 248153076102.

It is a sphenic number, since it is the product of 3 distinct primes.

201670351842 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 201670351842.

It is not an unprimeable number, because it can be changed into a prime (201670351849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16805862648 + ... + 16805862659.

It is an arithmetic number, because the mean of its divisors is an integer number (50417587962).

Almost surely, 2^201670351842 is an apocalyptic number.

201670351842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201670351842 is a wasteful number, since it uses less digits than its factorization.

201670351842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33611725312.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 201670351842 in words is "two hundred one billion, six hundred seventy million, three hundred fifty-one thousand, eight hundred forty-two".