198074370064 has 10 divisors (see below), whose sum is σ = 383769092030. Its totient is φ = 99037185024.

The previous prime is 198074370047. The next prime is 198074370071. The reversal of 198074370064 is 460073470891.

It can be written as a sum of positive squares in only one way, i.e., 198032120064 + 42250000 = 445008^2 + 6500^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6189824049 + ... + 6189824080.

It is an arithmetic number, because the mean of its divisors is an integer number (38376909203).

Almost surely, 2^198074370064 is an apocalyptic number.

It is an amenable number.

198074370064 is a deficient number, since it is larger than the sum of its proper divisors (185694721966).

198074370064 is a wasteful number, since it uses less digits than its factorization.

198074370064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12379648137 (or 12379648131 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 198074370064 in words is "one hundred ninety-eight billion, seventy-four million, three hundred seventy thousand, sixty-four".