240973973881 has 3 divisors (see below), whose sum is σ = 240974464773. Its totient is φ = 240973482990.

The previous prime is 240973973879. The next prime is 240973973917. The reversal of 240973973881 is 188379379042.

The square root of 240973973881 is 490891.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 240973973881 - 2¹ = 240973973879 is a prime.

It is a super-2 number, since 2×240973973881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240973971881) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 245446 + ... + 736336.

It is an arithmetic number, because the mean of its divisors is an integer number (80324821591).

Almost surely, 2^240973973881 is an apocalyptic number.

240973973881 is the 490891-st square number.

240973973881 is the 245446-th centered octagonal number.

It is an amenable number.

240973973881 is a deficient number, since it is larger than the sum of its proper divisors (490892).

240973973881 is an frugal number, since it uses more digits than its factorization.

240973973881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981782 (or 490891 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 240973973881 in words is "two hundred forty billion, nine hundred seventy-three million, nine hundred seventy-three thousand, eight hundred eighty-one".