201978130241 has 4 divisors (see below), whose sum is σ = 202002677184. Its totient is φ = 201953583300.

The previous prime is 201978130231. The next prime is 201978130259. The reversal of 201978130241 is 142031879102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201978130241 - 2¹⁰ = 201978129217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201978130195 and 201978130204.

It is not an unprimeable number, because it can be changed into a prime (201978130231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12261125 + ... + 12277586.

It is an arithmetic number, because the mean of its divisors is an integer number (50500669296).

Almost surely, 2^201978130241 is an apocalyptic number.

It is an amenable number.

201978130241 is a deficient number, since it is larger than the sum of its proper divisors (24546943).

201978130241 is an equidigital number, since it uses as much as digits as its factorization.

201978130241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24546942.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 201978130241 in words is "two hundred one billion, nine hundred seventy-eight million, one hundred thirty thousand, two hundred forty-one".