201053567678 has 4 divisors (see below), whose sum is σ = 301580351520. Its totient is φ = 100526783838.

The previous prime is 201053567677. The next prime is 201053567713. The reversal of 201053567678 is 876765350102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 876765350102 = 2 ⋅438382675051.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201053567677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50263391918 + ... + 50263391921.

It is an arithmetic number, because the mean of its divisors is an integer number (75395087880).

Almost surely, 2^201053567678 is an apocalyptic number.

201053567678 is a deficient number, since it is larger than the sum of its proper divisors (100526783842).

201053567678 is a wasteful number, since it uses less digits than its factorization.

201053567678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100526783841.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 201053567678 in words is "two hundred one billion, fifty-three million, five hundred sixty-seven thousand, six hundred seventy-eight".