201199621808678 has 32 divisors (see below), whose sum is σ = 303408581112000. Its totient is φ = 100064341564416.

The previous prime is 201199621808663. The next prime is 201199621808749. The reversal of 201199621808678 is 876808126991102.

It is a super-2 number, since 2×201199621808678² (a number of 29 digits) contains 22 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, 9065893550 + ... + 9065915742.

It is an arithmetic number, because the mean of its divisors is an integer number (9481518159750).

Almost surely, 2^{201199621808678} is an apocalyptic number.

201199621808678 is a deficient number, since it is larger than the sum of its proper divisors (102208959303322).

201199621808678 is a wasteful number, since it uses less digits than its factorization.

201199621808678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41696.

The product of its (nonzero) digits is 41803776, while the sum is 68.

The spelling of 201199621808678 in words is "two hundred one trillion, one hundred ninety-nine billion, six hundred twenty-one million, eight hundred eight thousand, six hundred seventy-eight".