201020020012078 has 24 divisors (see below), whose sum is σ = 320838141984192. Its totient is φ = 94441811737344.

The previous prime is 201020020012067. The next prime is 201020020012079. The reversal of 201020020012078 is 870210020020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020020012079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286128151 + ... + 286829842.

It is an arithmetic number, because the mean of its divisors is an integer number (13368255916008).

Almost surely, 2^{201020020012078} is an apocalyptic number.

201020020012078 is a deficient number, since it is larger than the sum of its proper divisors (119818121972114).

201020020012078 is a wasteful number, since it uses less digits than its factorization.

201020020012078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572958636 (or 572958619 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The spelling of 201020020012078 in words is "two hundred one trillion, twenty billion, twenty million, twelve thousand, seventy-eight".