1643402301255 has 48 divisors (see below), whose sum is σ = 3346564699296. Its totient is φ = 735508719360.

The previous prime is 1643402301209. The next prime is 1643402301257. The reversal of 1643402301255 is 5521032043461.

1643402301255 is a `hidden beast` number, since 1 + 6 + 4 + 340 + 2 + 301 + 2 + 5 + 5 = 666.

It is not a de Polignac number, because 1643402301255 - 2⁸ = 1643402300999 is a prime.

It is a super-2 number, since 2×1643402301255² (a number of 25 digits) contains 22 as substring.

1643402301255 is a modest number, since divided by 2301255 gives 164340 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1643402301257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127686052 + ... + 127698921.

It is an arithmetic number, because the mean of its divisors is an integer number (69720097902).

Almost surely, 2^{1643402301255} is an apocalyptic number.

1643402301255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1643402301255 is an abundant number, since it is smaller than the sum of its proper divisors (1703162398041).

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

1643402301255 is a wasteful number, since it uses less digits than its factorization.

1643402301255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255385008 (or 255385005 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 1643402301255 in words is "one trillion, six hundred forty-three billion, four hundred two million, three hundred one thousand, two hundred fifty-five".