259924030778 has 4 divisors (see below), whose sum is σ = 389886046170. Its totient is φ = 129962015388.

The previous prime is 259924030727. The next prime is 259924030781. The reversal of 259924030778 is 877030429952.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 185827379929 + 74096650849 = 431077^2 + 272207^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64981007693 + ... + 64981007696.

Almost surely, 2^259924030778 is an apocalyptic number.

259924030778 is a deficient number, since it is larger than the sum of its proper divisors (129962015392).

259924030778 is a wasteful number, since it uses less digits than its factorization.

259924030778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129962015391.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 259924030778 in words is "two hundred fifty-nine billion, nine hundred twenty-four million, thirty thousand, seven hundred seventy-eight".