242740653778 has 16 divisors (see below), whose sum is σ = 416218420800. Its totient is φ = 104008812336.

The previous prime is 242740653751. The next prime is 242740653781. The reversal of 242740653778 is 877356047242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842076 + ... + 1969447.

It is an arithmetic number, because the mean of its divisors is an integer number (26013651300).

Almost surely, 2^242740653778 is an apocalyptic number.

242740653778 is a deficient number, since it is larger than the sum of its proper divisors (173477767022).

242740653778 is a wasteful number, since it uses less digits than its factorization.

242740653778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816081.

The product of its (nonzero) digits is 15805440, while the sum is 55.

The spelling of 242740653778 in words is "two hundred forty-two billion, seven hundred forty million, six hundred fifty-three thousand, seven hundred seventy-eight".