263151727640 has 16 divisors (see below), whose sum is σ = 592091387280. Its totient is φ = 105260691040.

The previous prime is 263151727639. The next prime is 263151727711. The reversal of 263151727640 is 46727151362.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 263151727591 and 263151727600.

It is a congruent number.

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, 3289396556 + ... + 3289396635.

It is an arithmetic number, because the mean of its divisors is an integer number (37005711705).

Almost surely, 2^263151727640 is an apocalyptic number.

263151727640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263151727640 is an abundant number, since it is smaller than the sum of its proper divisors (328939659640).

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

263151727640 is a wasteful number, since it uses less digits than its factorization.

263151727640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6578793202 (or 6578793198 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 263151727640 in words is "two hundred sixty-three billion, one hundred fifty-one million, seven hundred twenty-seven thousand, six hundred forty".