240778694855 has 16 divisors (see below), whose sum is σ = 291050625600. Its totient is φ = 191213736192.

The previous prime is 240778694839. The next prime is 240778694857. The reversal of 240778694855 is 558496877042.

It is a cyclic number.

It is not a de Polignac number, because 240778694855 - 2⁴ = 240778694839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240778694791 and 240778694800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240778694857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1136942 + ... + 1331988.

It is an arithmetic number, because the mean of its divisors is an integer number (18190664100).

Almost surely, 2^240778694855 is an apocalyptic number.

240778694855 is a deficient number, since it is larger than the sum of its proper divisors (50271930745).

240778694855 is a wasteful number, since it uses less digits than its factorization.

240778694855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196858.

The product of its (nonzero) digits is 135475200, while the sum is 65.

The spelling of 240778694855 in words is "two hundred forty billion, seven hundred seventy-eight million, six hundred ninety-four thousand, eight hundred fifty-five".