201012201209978 has 8 divisors (see below), whose sum is σ = 301666177398240. Its totient is φ = 100456808743900.

The previous prime is 201012201209959. The next prime is 201012201209999. The reversal of 201012201209978 is 879902102210102.

201012201209978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24645925448 + ... + 24645933603.

It is an arithmetic number, because the mean of its divisors is an integer number (37708272174780).

Almost surely, 2^{201012201209978} is an apocalyptic number.

201012201209978 is a deficient number, since it is larger than the sum of its proper divisors (100653976188262).

201012201209978 is a wasteful number, since it uses less digits than its factorization.

201012201209978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49291861092.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 201012201209978 in words is "two hundred one trillion, twelve billion, two hundred one million, two hundred nine thousand, nine hundred seventy-eight".