210200001019978 has 8 divisors (see below), whose sum is σ = 319291140790080. Its totient is φ = 103769620756620.

The previous prime is 210200001019969. The next prime is 210200001019979. The reversal of 210200001019978 is 879910100002012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 210200001019978.

It is not an unprimeable number, because it can be changed into a prime (210200001019979) 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, 665189876488 + ... + 665189876803.

It is an arithmetic number, because the mean of its divisors is an integer number (39911392598760).

Almost surely, 2^{210200001019978} is an apocalyptic number.

210200001019978 is a deficient number, since it is larger than the sum of its proper divisors (109091139770102).

210200001019978 is a wasteful number, since it uses less digits than its factorization.

210200001019978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330379753372.

The product of its (nonzero) digits is 18144, while the sum is 40.

The spelling of 210200001019978 in words is "two hundred ten trillion, two hundred billion, one million, nineteen thousand, nine hundred seventy-eight".