259343793440 has 24 divisors (see below), whose sum is σ = 612699712380. Its totient is φ = 103737517312.

The previous prime is 259343793433. The next prime is 259343793487. The reversal of 259343793440 is 44397343952.

It can be written as a sum of positive squares in 2 ways, for example, as 257361406864 + 1982386576 = 507308^2 + 44524^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810449195 + ... + 810449514.

Almost surely, 2^259343793440 is an apocalyptic number.

259343793440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

259343793440 is an abundant number, since it is smaller than the sum of its proper divisors (353355918940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

259343793440 is a wasteful number, since it uses less digits than its factorization.

259343793440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620898724 (or 1620898716 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 53.

The spelling of 259343793440 in words is "two hundred fifty-nine billion, three hundred forty-three million, seven hundred ninety-three thousand, four hundred forty".