201871478512 has 40 divisors (see below), whose sum is σ = 426712010112. Its totient is φ = 91753502400.

The previous prime is 201871478503. The next prime is 201871478591. The reversal of 201871478512 is 215874178102.

201871478512 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3408093 + ... + 3466819.

Almost surely, 2^201871478512 is an apocalyptic number.

201871478512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201871478512 is an abundant number, since it is smaller than the sum of its proper divisors (224840531600).

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

201871478512 is a wasteful number, since it uses less digits than its factorization.

201871478512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78277 (or 78271 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 46.

The spelling of 201871478512 in words is "two hundred one billion, eight hundred seventy-one million, four hundred seventy-eight thousand, five hundred twelve".