20201011209978 has 16 divisors (see below), whose sum is σ = 40413569196000. Its totient is φ = 6731745940656.

The previous prime is 20201011209971. The next prime is 20201011210001. The reversal of 20201011209978 is 87990211010202.

It is not an unprimeable number, because it can be changed into a prime (20201011209971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481092925 + ... + 481134912.

It is an arithmetic number, because the mean of its divisors is an integer number (2525848074750).

Almost surely, 2^{20201011209978} is an apocalyptic number.

20201011209978 is an abundant number, since it is smaller than the sum of its proper divisors (20212557986022).

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

20201011209978 is a wasteful number, since it uses less digits than its factorization.

20201011209978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962231341.

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 20201011209978 in words is "twenty trillion, two hundred one billion, eleven million, two hundred nine thousand, nine hundred seventy-eight".