1643153256330 has 32 divisors (see below), whose sum is σ = 3964214780928. Its totient is φ = 435880094400.

The previous prime is 1643153256319. The next prime is 1643153256347. The reversal of 1643153256330 is 336523513461.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 143375881 + ... + 143387340.

It is an arithmetic number, because the mean of its divisors is an integer number (123881711904).

Almost surely, 2^{1643153256330} is an apocalyptic number.

1643153256330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1643153256330 is an abundant number, since it is smaller than the sum of its proper divisors (2321061524598).

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

1643153256330 is a wasteful number, since it uses less digits than its factorization.

1643153256330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286763422.

The product of its (nonzero) digits is 583200, while the sum is 42.

Adding to 1643153256330 its reverse (336523513461), we get a palindrome (1979676769791).

The spelling of 1643153256330 in words is "one trillion, six hundred forty-three billion, one hundred fifty-three million, two hundred fifty-six thousand, three hundred thirty".