199948518041442 has 64 divisors (see below), whose sum is σ = 411010634643840. Its totient is φ = 64808255577600.

The previous prime is 199948518041431. The next prime is 199948518041443. The reversal of 199948518041442 is 244140815849991.

It is a super-3 number, since 3×199948518041442³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (199948518041443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143458284 + ... + 144845352.

It is an arithmetic number, because the mean of its divisors is an integer number (6422041166310).

Almost surely, 2^{199948518041442} is an apocalyptic number.

199948518041442 is an abundant number, since it is smaller than the sum of its proper divisors (211062116602398).

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

199948518041442 is a wasteful number, since it uses less digits than its factorization.

199948518041442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389059.

The product of its (nonzero) digits is 119439360, while the sum is 69.

The spelling of 199948518041442 in words is "one hundred ninety-nine trillion, nine hundred forty-eight billion, five hundred eighteen million, forty-one thousand, four hundred forty-two".