259493149779 has 16 divisors (see below), whose sum is σ = 348052320000. Its totient is φ = 171965421216.

The previous prime is 259493149739. The next prime is 259493149789. The reversal of 259493149779 is 977941394952.

It is not a de Polignac number, because 259493149779 - 2⁸ = 259493149523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (259493149739) 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, 1388322 + ... + 1564104.

It is an arithmetic number, because the mean of its divisors is an integer number (21753270000).

Almost surely, 2^259493149779 is an apocalyptic number.

259493149779 is a deficient number, since it is larger than the sum of its proper divisors (88559170221).

259493149779 is a wasteful number, since it uses less digits than its factorization.

259493149779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178714.

The product of its digits is 154314720, while the sum is 69.

The spelling of 259493149779 in words is "two hundred fifty-nine billion, four hundred ninety-three million, one hundred forty-nine thousand, seven hundred seventy-nine".