240552395721 has 12 divisors (see below), whose sum is σ = 379052260080. Its totient is φ = 145789330680.

The previous prime is 240552395693. The next prime is 240552395729. The reversal of 240552395721 is 127593255042.

240552395721 is a `hidden beast` number, since 2 + 4 + 0 + 55 + 23 + 9 + 572 + 1 = 666.

It is not a de Polignac number, because 240552395721 - 2⁷ = 240552395593 is a prime.

It is a super-2 number, since 2×240552395721² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (240552395729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1214910991 + ... + 1214911188.

It is an arithmetic number, because the mean of its divisors is an integer number (31587688340).

Almost surely, 2^240552395721 is an apocalyptic number.

It is an amenable number.

240552395721 is a deficient number, since it is larger than the sum of its proper divisors (138499864359).

240552395721 is a wasteful number, since it uses less digits than its factorization.

240552395721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429822196 (or 2429822193 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 240552395721 in words is "two hundred forty billion, five hundred fifty-two million, three hundred ninety-five thousand, seven hundred twenty-one".