201949740801 has 24 divisors (see below), whose sum is σ = 292398986880. Its totient is φ = 134313322176.

The previous prime is 201949740791. The next prime is 201949740803. The reversal of 201949740801 is 108047949102.

It is a happy number.

It is not a de Polignac number, because 201949740801 - 2⁷ = 201949740673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201949740803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6743980 + ... + 6773858.

It is an arithmetic number, because the mean of its divisors is an integer number (12183291120).

Almost surely, 2^201949740801 is an apocalyptic number.

It is an amenable number.

201949740801 is a deficient number, since it is larger than the sum of its proper divisors (90449246079).

201949740801 is a wasteful number, since it uses less digits than its factorization.

201949740801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31645 (or 31642 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 201949740801 in words is "two hundred one billion, nine hundred forty-nine million, seven hundred forty thousand, eight hundred one".