20201001982 has 32 divisors (see below), whose sum is σ = 36411876864. Its totient is φ = 8217924000.

The previous prime is 20201001979. The next prime is 20201001983. The reversal of 20201001982 is 28910010202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201001983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197269 + ... + 281632.

It is an arithmetic number, because the mean of its divisors is an integer number (1137871152).

Almost surely, 2^20201001982 is an apocalyptic number.

20201001982 is a deficient number, since it is larger than the sum of its proper divisors (16210874882).

20201001982 is a wasteful number, since it uses less digits than its factorization.

20201001982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479064.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 20201001982 in words is "twenty billion, two hundred one million, one thousand, nine hundred eighty-two".