263005141640 has 16 divisors (see below), whose sum is σ = 591761568780. Its totient is φ = 105202056640.

The previous prime is 263005141601. The next prime is 263005141669. The reversal of 263005141640 is 46141500362.

It can be written as a sum of positive squares in 2 ways, for example, as 262834630276 + 170511364 = 512674^2 + 13058^2 .

It is a junction number, because it is equal to n+sod(n) for n = 263005141597 and 263005141606.

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, 3287564231 + ... + 3287564310.

Almost surely, 2^263005141640 is an apocalyptic number.

263005141640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263005141640 is an abundant number, since it is smaller than the sum of its proper divisors (328756427140).

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

263005141640 is a wasteful number, since it uses less digits than its factorization.

263005141640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575128552 (or 6575128548 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 263005141640 in words is "two hundred sixty-three billion, five million, one hundred forty-one thousand, six hundred forty".