201247578856212 has 48 divisors (see below), whose sum is σ = 542192789792640. Its totient is φ = 56906531868672.

The previous prime is 201247578856139. The next prime is 201247578856273. The reversal of 201247578856212 is 212658875742102.

It is a super-3 number, since 3×201247578856212³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12349499637 + ... + 12349515932.

It is an arithmetic number, because the mean of its divisors is an integer number (11295683120680).

Almost surely, 2^{201247578856212} is an apocalyptic number.

It is an amenable number.

201247578856212 is an abundant number, since it is smaller than the sum of its proper divisors (340945210936428).

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

201247578856212 is a wasteful number, since it uses less digits than its factorization.

201247578856212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24699015680 (or 24699015678 counting only the distinct ones).

The product of its (nonzero) digits is 30105600, while the sum is 60.

The spelling of 201247578856212 in words is "two hundred one trillion, two hundred forty-seven billion, five hundred seventy-eight million, eight hundred fifty-six thousand, two hundred twelve".