1643263603131 has 8 divisors (see below), whose sum is σ = 2191159309824. Its totient is φ = 1095438482600.

The previous prime is 1643263603123. The next prime is 1643263603151. The reversal of 1643263603131 is 1313063623461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1643263603131 - 2³ = 1643263603123 is a prime.

It is a super-2 number, since 2×1643263603131² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1643263603131.

It is not an unprimeable number, because it can be changed into a prime (1643263603151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17592195 + ... + 17685356.

It is an arithmetic number, because the mean of its divisors is an integer number (273894913728).

Almost surely, 2^{1643263603131} is an apocalyptic number.

1643263603131 is a deficient number, since it is larger than the sum of its proper divisors (547895706693).

1643263603131 is a wasteful number, since it uses less digits than its factorization.

1643263603131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35293081.

The product of its (nonzero) digits is 139968, while the sum is 39.

The spelling of 1643263603131 in words is "one trillion, six hundred forty-three billion, two hundred sixty-three million, six hundred three thousand, one hundred thirty-one".